Peter's profound promises to perfectly protect the progeny of the Padre putter out. Jesus is tormented to His core knowing what He is about to face, but commits Himself for you.
Sometimes loss is gain. Sometimes defeat is victory. Sometimes weakness is strength. Sometimes death is life. Sometimes, that is, when Christ is at the center, on his cross and not in his tomb.
This is the patient love of God. He is stubborn about the salvation of sinners. He will not be rushed even if his name is mocked, and the trustworthiness of his promises are called into question.