Jesus said, "'Love the Lord your God with all your passion and prayer and intelligence.' This is the most important, the first on any list. But there is a second to set alongside it: 'Love others as well as you love yourself.' These two commands are pegs; everything in God's Law and the Prophets hangs on them."
Romans 13:9 NLT
For the commandments say, "You must not commit adultery. You must not murder. You must not steal. You must not covet." These - and other such commandments - are summed up in this one commandment: "Love your neighbor as yourself."