Please read the Scripture passage before the homily.
David was quite a king. He fought Goliath and the Philistines. His name is on the book of Psalms. He is well-remembered in history. When he would return in glory, he would set all things straight. The Christ would be the long-awaited Son of David, the one would right, defeat the Goliath of the Roman Empire. Such was the popular opinion and the desperate hope of the oppressed Israelites.
Jesus did not fit that bill. He rode into Jerusalem on a donkey, not a tank. He seemed weak rather than strong. He led no armies. If anything, he was the opposite of a Son of David according popular hopes. How was he the Son of David?
For answer, Jesus refers to Psalm 110. There David calls the Christ figure Lord, putting ghat one above himself. Being a Son of David, then, does not mean that the Christ figure had to destroy the human enemies of his people.
If the true Son of David had a Goliath, it would be death and sin. If the Son of David had to wage war, he would defeat hatred and greed and establish friendship, reconciliation, and peace. If the Son of David were to be larger than life, he would have to rise from the dead, having defeated death by dying on a cross and rising again. Jesus turned the idea of the Son of David on its head.
It is not a political leader who is the Son of David, the Christ. It is not a politician who will save us from enemies and distress. The Son of David did not come to be served but to give his life s a ransom for all.
We are called Christian, followers of the Christ. We, therefore, have not been called be served but to serve and give our live as a ransom for all.