He went away again the second time, and prayed, saying, O my Father, if this cup may not pass away from me, except I drink it, thy will be done. Matthew 26:42 KJV
Jesus crucified on the Cross was the only way the salvation of men could be accomplished. There is none other.
Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved. Acts 4:12 KJV
Jesus is not a way to heaven and peace with God, He is the only way.
Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
John 14:6 KJV
If salvation could have come any other way the Father would never have allowed His Son to go to the cross.