Matthew 22:34-38

But when the Pharisees heard that Jesus had silenced the Sadducees, they gathered together.

And one of them, a lawyer, asked Him a question, testing 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 foremost commandment.