“And one of them, a lawyer, asked Jesus a question, to test Him,
“Teacher, which is the great commandment in the law?” And He said to him,
“You shall love the Lord your God with all your heart, and with all your soul, and with all your mind.

This is the great and first commandment. And a second is like it,

“You shall love your neighbour as yourself. On these two commandments depend all the law and the prophets.”
– (Gospel of Matthew 22:35-40)

“You shall love the Lord your God with all your heart, and with all your soul, and with all your mind.
– (Matthew 22:37)