"Yahweh" is the personal name of our God.
A Bible search for יהוה [written YHWH - pronounced Yahweh, our god] resulted in 8082 hits (instances of use), so we will only examine an illustrative few, mostly letting Yahweh's word speak for itself with my emphasis for your convenience. The four Hebrew characters יהוה are written from right to left, so correspond with the English characters (left to right) YHWH, which is pronounced "Yahweh" (see the Tetragrammaton).
And Adam knew Eve his wife; and she conceived, and bare Cain, and said, I have gotten a man from יהוה [YHWH - Yahweh]. Genesis 4:1
And to Seth, to him also there was born a son; and he called his name Enos: then began men to call upon the name of יהוה [YHWH - Yahweh]. Genesis 4:26
And he [Abram] removed from thence unto a mountain on the east of Bethel, and pitched his tent, having Bethel on the west, and Hai on the east: and there he builded an altar unto יהוה [YHWH - Yahweh], and called upon the name of יהוה [YHWH - Yahweh]. Genesis 12:8
And the angel of יהוה [YHWH - Yahweh] said unto her, Behold, thou art with child, and shalt bear a son, and shalt call his name Ishmael; because יהוה [YHWH - Yahweh] hath heard thy affliction. Genesis 16:11
And he builded an altar there, and called upon the name of יהוה [YHWH - Yahweh] and pitched his tent there: and there Isaac's servants digged a well. Genesis 26:25
יהוה [YHWH - Yahweh] is a man of war: יהוה [YHWH - Yahweh] is his name. Exodus 15:3
And all people of the earth shall see that thou art called by the name of יהוה [YHWH - Yahweh]; and they shall be afraid of thee. Deuteronomy 28:10
And the women said unto Naomi, Blessed be יהוה [YHWH - Yahweh], which hath not left thee this day without a kinsman, that his name may be famous in Israel. Ruth 4:14
For יהוה [YHWH - Yahweh] will not forsake his people for his great name's sake: because it hath pleased יהוה [YHWH - Yahweh] to make you his people. 1 Samuel 12:22
And let thy name be magnified for ever, saying, יהוה [YHWH - Yahweh] of hosts is the Elohim over Israel: and let the house of thy servant David be established before thee. 2 Samuel 7:26
And when the queen of Sheba heard of the fame of Solomon concerning the name of יהוה [YHWH - Yahweh], she came to prove him with hard questions. 1 Kings 10:1
And they that know thy name will put their trust in thee: for thou, יהוה [YHWH - Yahweh], hast not forsaken them that seek thee. Psalms 9:10
Then they that feared יהוה [YHWH - Yahweh] spake often one to another: and יהוה [YHWH - Yahweh] hearkened, and heard it, and a book of remembrance was written before him for them that feared יהוה [YHWH - Yahweh], and that thought upon his name. Malachi 3:16
Is any sick among you? let him call for the elders of the assembly; and let them pray over him, anointing him with oil in the name of יהוה [YHWH - Yahweh]: James 5:14
"Yahweh" named Himself because He has no superior.
Any attempt by man or Satan to name or rename Yahweh is a declaration of superiority above Yahweh, therefore is treason and blasphemy. Only a superior can name their inferior. The lesser can NOT name the greater. (see Who Owns Your Name?). Since there is NO ONE above Yahweh, no one can name Him. Only He can give Himself a name, and He did. This isn't said directly, but we are told that there is none above him and He has repeatedly told us His name.
יהוה [YHWH - Yahweh] thundered from heaven, and the most High uttered his voice. 2 Samuel 22:14
I will praise יהוה [YHWH - Yahweh] according to his righteousness: and will sing praise to the name of יהוה [YHWH - Yahweh] most high. Psalms 7:17
That men may know that thou, whose name alone is יהוה [YHWH - Yahweh], art the most high over all the earth. Psalms 83:18
Forasmuch then as we are the offspring of יהוה [YHWH - Yahweh], we ought not to think that the Most High is like unto gold, or silver, or stone, graven by art and man's device. Acts 17:29
There is no doubt that Yahweh is the Most High. There is no one superior to Him to give Him a name.
"Yahweh" is His name because He said so.
Following are just a few of the statements in which Yahweh states His own name. There are many more we won't examine now:
And he said unto him, I am יהוה [YHWH - Yahweh] that brought thee out of Ur of the Chaldees, to give thee this land to inherit it. Genesis 15:7
And, behold, יהוה [YHWH - Yahweh] stood above it, and said, I am יהוה [YHWH - Yahweh] Elohim of Abraham thy father, and the Elohim of Isaac: the land whereon thou liest, to thee will I give it, and to thy seed; Genesis 28:13
And Elohim spake unto Moses, and said unto him, I am יהוה [YHWH - Yahweh]: Exodus 6:2
Wherefore say unto the children of Israel, I am יהוה [YHWH - Yahweh], and I will bring you out from under the burdens of the Egyptians, and I will rid you out of their bondage, and I will redeem you with a stretched out arm, and with great judgments: And I will take you to me for a people, and I will be to you an Elohim: and ye shall know that I am יהוה [YHWH - Yahweh] your Elohim, which bringeth you out from under the burdens of the Egyptians. And I will bring you in unto the land, concerning the which I did swear to give it to Abraham, to Isaac, and to Jacob; and I will give it you for an heritage: I am יהוה [YHWH - Yahweh]. And Moses spake so unto the children of Israel: but they hearkened not unto Moses for anguish of spirit, and for cruel bondage. Exodus 6:6-9
And the Egyptians shall know that I am יהוה [YHWH - Yahweh], when I stretch forth mine hand upon Egypt, and bring out the children of Israel from among them. ... Thus saith יהוה, In this thou shalt know that I am יהוה [YHWH - Yahweh]: behold, I will smite with the rod that is in mine hand upon the waters which are in the river, and they shall be turned to blood. Exodus 7:5,17
I am יהוה [YHWH - Yahweh] thy Elohim, which have brought thee out of the land of Egypt, out of the house of bondage...Thou shalt not take the name of יהוה [YHWH - Yahweh] thy Elohim in vain; for יהוה [YHWH - Yahweh] will not hold him guiltless that taketh his name in vain. Exodus 20:2,7
And יהוה [YHWH - Yahweh] said unto Moses, I will do this thing also that thou hast spoken: for thou hast found favour in my sight, and I know thee by name. And he said, I beseech thee, shew me thy glory. And he said, I will make all my goodness pass before thee, and I will proclaim the name of יהוה [YHWH - Yahweh] before thee; and will be gracious to whom I will be gracious, and will shew mercy on whom I will shew mercy. And he said, Thou canst not see my face: for there shall no man see me, and live. And יהוה [YHWH - Yahweh] said, Behold, there is a place by me, and thou shalt stand upon a rock: And it shall come to pass, while my glory passeth by, that I will put thee in a clift of the rock, and will cover thee with my hand while I pass by: And I will take away mine hand, and thou shalt see my back parts: but my face shall not be seen. Exodus 33:17-23
And יהוה [YHWH - Yahweh] descended in the cloud, and stood with him there, and proclaimed the name of יהוה [YHWH - Yahweh]. And יהוה [YHWH - Yahweh] passed by before him, and proclaimed, יהוה [YHWH - Yahweh], יהוה [YHWH - Yahweh] -El, merciful and gracious, longsuffering, and abundant in goodness and truth, Exodus 34:5-6
And thou shalt not let any of thy seed pass through the fire to Molech, neither shalt thou profane the name of thy Elohim: I am יהוה [YHWH - Yahweh]. Leviticus 18:21
And ye shall not swear by my name falsely, neither shalt thou profane the name of thy Elohim: I am יהוה [YHWH - Yahweh]. Leviticus 19:12
Speak unto Aaron and to his sons, that they separate themselves from the holy things of the children of Israel, and that they profane not my holy name in those things which they hallow unto me: I am יהוה [YHWH - Yahweh]. Leviticus 22:2
Then there shall be a place which יהוה [YHWH - Yahweh] your Elohim shall choose to cause his name to dwell there; thither shall ye bring all that I command you; your burnt offerings, and your sacrifices, your tithes, and the heave offering of your hand, and all your choice vows which ye vow unto יהוה [YHWH - Yahweh]: Deuteronomy 12:11
And I said unto you, I am יהוה [YHWH - Yahweh] your Elohim; fear not the elohim of the Amorites, in whose land ye dwell: but ye have not obeyed my voice. Judges 6:10
I am יהוה [YHWH - Yahweh] thy Elohim, which brought thee out of the land of Egypt: open thy mouth wide, and I will fill it. Psalms 81:10
I am יהוה [YHWH - Yahweh]: that is my name: and my glory will I not give to another, neither my praise to graven images. Isaiah 42:8
I, even I, am יהוה [YHWH - Yahweh]; and beside me there is no saviour. Isaiah 43:11
But let him that glorieth glory in this, that he understandeth and knoweth me, that I am יהוה [YHWH - Yahweh] which exercise lovingkindness, judgment, and righteousness, in the earth: for in these things I delight, saith יהוה. Jeremiah 9:24
For I am יהוה [YHWH - Yahweh]: I will speak, and the word that I shall speak shall come to pass; it shall be no more prolonged: for in your days, O rebellious house, will I say the word, and will perform it, saith the Sovereign יהוה. Ezekiel 12:25
Yet I am יהוה [YHWH - Yahweh] thy Elohim from the land of Egypt, and thou shalt know no elohim but me: for there is no saviour beside me. Hosea 13:4
And ye shall know that I am in the midst of Israel, and that I am יהוה [YHWH - Yahweh] your Elohim, and none else: and my people shall never be ashamed. Joel 2:27
For from the rising of the sun even unto the going down of the same my name shall be great among the Gentiles; and in every place incense shall be offered unto my name, and a pure offering: for my name shall be great among the heathen, saith יהוה [YHWH - Yahweh] of hosts. Malachi 1:11
And after they had held their peace, James answered, saying, Men and brethren, hearken unto me: Simeon hath declared how יהוה [YHWH - Yahweh] at the first did visit the Gentiles, to take out of them a people for his name. And to this agree the words of the prophets; as it is written, After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up: That the residue of men might seek after יהוה [YHWH - Yahweh], and all the Gentiles, upon whom my name is called, saith יהוה [YHWH - Yahweh], who doeth all these things. Known unto יהוה [YHWH - Yahweh] are all his works from the beginning of the world. Acts 15:13-18
How could any Bible believer doubt the name of Yahweh?
"Yahweh" is the ONLY "HOLY" (SACRED) Name
Speak unto Aaron and to his sons, that they separate themselves from the holy things of the children of Israel, and that they profane not my holy name in those things which they hallow unto me: I am יהוה. Leviticus 22:2
... I am יהוה [Yahweh, our god]. Therefore shall ye keep my commandments, and do them: I am יהוה. Neither shall ye profane my holy name; but I will be hallowed among the children of Israel: Leviticus 22:30-32 (see Keep HIS Commandments)
Glory ye in his holy name: let the heart of them rejoice that seek יהוה. I Chronicles 16:10
For our heart shall rejoice in him, because we have trusted in his holy name. Psalms 33:21
Let them praise the name of יהוה: for his name alone is excellent; his glory is above the earth and heaven. Psalms 148:13
Bless יהוה [YHWH - Yahweh], O my soul: and all that is within me, bless his holy name. Psalms 103:1
He sent redemption unto his people: he hath commanded his covenant for ever: holy and reverend is his name. Psalms 111:9
Therefore say unto the house of Israel, Thus saith the Sovereign יהוה [YHWH - Yahweh]; I do not this for your sakes, O house of Israel, but for mine holy name's sake, which ye have profaned among the heathen, whither ye went. Ezekiel 36:22
Thou shalt fall upon the open field: for I have spoken it, saith the Sovereign יהוה [YHWH - Yahweh]. And I will send a fire on Magog, and among them that dwell carelessly in the isles: and they shall know that I am יהוה [YHWH - Yahweh]. So will I make my holy name known in the midst of my people Israel; and I will not let them pollute my holy name any more: and the heathen shall know that I am יהוה [YHWH - Yahweh], the Holy One in Israel. Ezekiel 39:5-7
After this manner therefore pray ye: Our Father which art in heaven, Hallowed [Holy] be thy name. Matthew 6:9
Search the Bible all you want, you will find NO other Sacred / Holy name.