We know Yahweh's ultimate will, that all should be saved, but can He succeed? For a complete study of this subject, see the book "The Ultimate Purpose of Yahweh - All in All New" by Stuart H. Pouliot by clicking here.

Christ prayed and taught us to pray that the Father's will be done. Do you believe that Christ's prayer will go unanswered? Or that Yahweh is unable to accomplish it?

We have been promised that what we ask in Jesus name will be given.

John 16:24
Hitherto have ye asked nothing in my name: ask, and ye shall receive, that your joy may be full.

How much more sure is the answer to the Messiah's prayer that Yahweh's will be done? Yahweh will succeed through His love in wooing and winning all. Yahweh says that He will succeed.

Isaiah 46:9-10
... I am יהוה [Yahweh, our god], and there is none else; I am יהוה [Yahweh], and there is none like me, Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure:

Matthew 19:25,26
When his disciples heard it, they were exceedingly amazed, saying, Who then can be saved? But Jesus beheld them, and said unto them, With men this is impossible; but with Elohim all things are possible.

But doesn't the Bible teach eternal damnation? see The Three Harvests and Is Hell Eternal?

Whether we believe Yahweh's claim of success or not, He will succeed.