It is not in me I cannot do this by any virtue, or power, or art of my own; but only by the inspiration of the great God. 1st, Thus he gives the honour to God, to whom it was due, and leads Pharaoh to the knowledge of him. Great gifts then appear most graceful and illustrious, when those that have them use them humbly, and take not the praise of them to themselves, but give it to God. 2d, He shows respect to Pharaoh, and hearty goodwill to him, supposing that the interpretation would be an answer of peace. Those that consult God's oracles may expect an answer of peace.
Related Commentaries of Genesis 41:16
Genesis 41:16
16 And Joseph answered Pharaoh, saying, It is not in me: God shall give Pharaoh an answer of peace.