Matthew 22:37-40 AMPC
And He replied to him, You shall love the Lord your God with all your heart and with all your soul and with all your mind (intellect). [Deut. 6:5.] This is the great (most important, principal) and first commandment. And a second is like it: You shall love your neighbor as [you do] yourself. [Lev. 19:18.] These two commandments sum up and upon them depend all the Law and the Prophets.