Jesus told his critics that the greatest commandments are to love God and to love others.

Matthew 22:34-40

34 But when the Pharisees heard that Jesus had answered the Sadducees in such a way that the Sadducees could not think of anything that they might say to respond to him, the Pharisees gathered together to plan what they would say to him. Then they approached him. 35 One of them was a man who had studied well the laws that God gave Moses. He wanted to see if Jesus could answer his question well or if he would say something wrong. He asked him, 36 “Teacher, which commandment in the laws that God gave Moses is the most important?” 37 Jesus quoted the Scriptures as he replied, “‘You must love the Lord your God with all [IDM] your ◄inner being/heart►. Show that you love him in all that you desire, in all that you feel, and in all that you think.’ 38 That is the most important commandment in the laws that God gave Moses. 39 The next most important commandment that everyone must surely obey is: ‘You must love the people you come in contact with as much as you love yourself.’ 40 These two commandments are the basis of every law that Moses wrote in the Scriptures and also of all that the prophets wrote.”