John Calvin's Commentary on the Bible - Genesis 37:31
Verse 31 31.And they took Joseph’s coat. They now return to their first scheme. In order that their father may have no suspicion of their crime, they send the bloody coat, from which he might conjecture that Joseph had been torn by some wild beast. Although Moses alludes to this briefly, I yet think that they rather sent some of their servants, who were not accessory to the crime, than any of their number. For he says soon afterwards, that his sons and daughters came to offer some consolation... read more
Adam Clarke's Commentary on the Bible - Genesis 37:36
Potiphar, an officer of Pharaoh's - The word סריס saris , translated officer, signifies a eunuch; and lest any person should imagine that because this Potiphar had a wife, therefore it is absurd to suppose him to have been a eunuch, let such persons know that it is not uncommon in the east for eunuchs to have wives, nay, some of them have even a harem or seraglio where they keep many women, though it does not appear that they have any progeny; and probably discontent on this ground might... read more