Genesis 40:3 - Exposition

And he put them in ward (or in custody) in the house of the captain of the guard,— i.e. Potiphar ( vide Genesis 37:36 )— into the prison, —literally, house of enclosure (vide Genesis 39:20 )— the place where Joseph was bound. The word אָסור , from אָסַר , to make fast by binding, seems to corroborate the Psalmist's assertion ( Psalms 105:18 ) that Joseph had been laid in iron and his feet hurt with fetters; but this could only have been temporarily ( vide Genesis 40:4 , Genesis 40:6 ).