ISB ~ Matthew 22 v40

these two commandments:The 613 commands of the Mosaic Law are distilled into two prescriptions: love God (Deut 6:5) and your neighbor (Lev 19:18). These summarize the spirit of the entire OT (law and the prophets). According also to Paul, love is the greatest theological virtue (1 Cor 13:13) and fulfills God’s moral Law (Rom 13:8-10; CCC 182224).