John Wesley on Genesis 16:4

We have here the ill consequences of Abram's marriage to Hagar: a deal of mischief it made presently. Hagar no sooner perceives herself with child, but she looks scornfully upon her mistress; upbraids her perhaps with her barrenness, and insults over her. Sarai falls upon Abram, and very unjustly charges him with the injury, suspecting that he countenanced Hagar's insolence: and as one not willing to hear what Abram had to say she rashly appeals to God. The Lord judge between me and thee, as if Abram had refused to right her. When passion is upon the throne, reason is out of doors, and is neither heard nor spoken. Those are not always in the right that are most forward in appealing to God. Rash and bold imprecations are commonly evidences of guilt and a bad cause.