Matthew 22 starts with the Parable of the Wedding Banquet in which a king prepares a wedding banquet for his son. This Jesus compares to the kingdom of heaven with the invited guests refusing to come to the banquet so random people were called to make up the number "and so the wedding hall was filled with guests". However one guest was "not wearing wedding clothes" so he was tied "hand and foot" and thrown out! "For many are called but few are chosen!" (or as Jean-Jacques Zbinden used to say: "many are cold but few are frozen!")
Then the Pharisees tried to catch Jesus over whether people should pay tax to Caesar or not? Jesus stumped them with a brilliant and famous answer: "Give to Caesar what is Caesar's, and to God what us God's!" After this the Sadducees questioned the matter of marriage in eternity by presenting a hypothetical case of a woman of multiple marriages asking who would be her husband in eternity? Jesus replied that "at the resurrection people will neither marry or be given in marriage; they will be like the angels". Then they asked Jesus which was the greatest commandment and Jesus replied that it was love God with all your heart and love your neighbour as yourself. Finally Jesus asked the Pharisees who the Christ would be the son of? They answer the son of David. So Jesus asks how can the answer just be David's son if Psalm 110 sees the Messiah being called Lord?