Adam Clarke's Commentary on the Bible

Verse 20 (Genesis 40:20)

Pharaoh's birthday - The distinguishing a birthday by a feast appears from this place to have been a very ancient custom. It probably had its origin from a correct notion of the immortality of the soul, as the commencement of life must appear of great consequence to that person who believed he was to live for ever. St. Matthew ( Matthew 14:6 ;) mentions Herod's keeping his birthday; and examples of this kind are frequent to the present time in most nations.

Lifted up the head of the chief butler, etc. - By lifting up the head, probably no more is meant than bringing them to trial, tantamount to what was done by Jezebel and the nobles of Israel to Naboth: Set Naboth on high among the people; and set two men, sons of Belial, to bear witness against him, etc.; 1 Kings 21:9 , etc. The issue of the trial was, the baker alone was found guilty and hanged; and the butler, being acquitted, was restored to his office.

- Adam Clarke's Commentary on the Bible