Genesis 41:9

“Then spake the chief butler unto Pharaoh, etc.] When the magicians and wise men could not interpret his dreams, he was in distress of mind on that account: saying, I do remember my faults this day; which some interpret of his forgetfulness of Joseph and his afflictions, and of his ingratitude to him, and breach of promise in not making mention of him to Pharaoh before this time; but they seem rather to be faults he had committed against Pharaoh, and were the reason of his being wroth with him, as in (<014110>Genesis 41:10); and these were either real faults, which the king had pardoned, or however such as he had been charged with, and cleared from; and which he now in a courtly manner takes…”

“then spake the chief butler unto Pharaoh, saying, I do remember my faults--This public acknowledgment of the merits of the young Hebrew would, tardy though it was, have reflected credit on the butler had it not been obviously made to ingratiate himself with his royal master. It is right to confess our faults against God, and against our fellow men when that confession is made in the spirit of godly sorrow and penitence. But this man was not much impressed with a sense of the fault he had committed against Joseph; he never thought of God, to whose goodness he was indebted for the prophetic announcement of his release, and in acknowledging his former fault against the king, he was practising…”

“41:9-13 The chief cup-bearer finally remembered Joseph and testified that his interpretations were true.”