Read psalm 89:19-37, paying particular attention to the verses in which god refers to his faithfulness. what message is he giving to david?

In psalm 89, God is letting David know that God will protect him. God says that he is David's father and will protect him and his family, but will also do more. God says that since he loves David and since David is faithful, that He (God) will make David great. God swears to his faithfulness to make David great and protect him no matter what. God's faithfulness is unwavering.