John Wesley on Genesis 40:1

We should not have had this story of Pharaoh's butler and baker recorded in scripture, if it had not been serviceable to Joseph's preferment. The world stands for the sake of the church, and is governed for its good. Observe, [1.] Two of the great officers of Pharaoh's court having offended the king are committed to prison. Note, High places are slippery places; nothing more uncertain than the favour of princes. Those that make God's favour their happiness, and his service their business, will find him a better master than Pharaoh was, and not so extreme to mark what they do amiss. Many conjectures there are concerning the offence of these servants of Pharaoh; some make it no less than an attempt to take away his life; others no more but the casual lighting of a fly into his cup, and a little sand in his bread: whatever it was, Providence, by this means, brought them into the prison where Joseph was.