Deuteronomy 24:18

Thou shalt remember, to wit, affectionately and practically; and by the compassionate sense of others miseries, thou shalt make it evident that thou hast not forgotten thy own distresses and deliverances. I command thee to do this thing; 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.