Jamieson, Fausset and Brown on Genesis 40:12-15

12-15. Joseph said, ... This is the interpretation--Speaking as an inspired interpreter, he told the butler that within three days he would be restored to all the honors and privileges of his office; and while making that joyful announcement, he earnestly bespoke the officer's influence for his own liberation. Nothing has hitherto met us in the record indicative of Joseph's feelings; but this earnest appeal reveals a sadness and impatient longing for release, which not all his piety and faith in God could dispel.