When the Pharisees heard that [Jesus] had silenced the Sadducees, they came together. And one of them, an expert in the law, asked a question to test him: “Teacher, which command in the law is the greatest?”
He said to him, “Love the Lord your God with all your heart, with all your soul, and with all your mind. This is the greatest and most important command. The second is like it: Love your neighbor as yourself. All the Law and the Prophets depend on these two commands.”
While the Pharisees were together, Jesus questioned them, “What do you think about the Messiah? Whose son is he?”
They replied, “David’s.”
He asked them, “How is it then that David, inspired by the Spirit, calls him ‘Lord’:
The Lord declared to my Lord,
‘Sit at my right hand
until I put your enemies under your feet’?
“If David calls him ‘Lord,’ how, then, can he be his son?” No one was able to answer him at all, and from that day no one dared to question him anymore.
Matthew 22:34-46 (CSB)