Matthew Poole and continuators on Deuteronomy 24:18

18 But thou shalt remember that thou wast a bond-man in Egypt, and the LORD thy God redeemed thee thence: therefore I command thee to do this thing e.

To wit, affectionately and practically, and by thy compassionate sence of others miseries thou shalt make it evident that thou hast not forgotten thy own distresses and deliverances. I having thereby authority to command thee, and thou having obligations on that account both to obey me and to pity others in the same calamities which thou hast felt.