Saul in his continued jealousy pursues David, but Saul’s son Jonathan has a different heart. Consider:
- Saul’s jealousy – The jealousy that began in chapter 18 reigns throughout our passage today as Saul seeks David’s life. Is there jealousy in your heart? Are you treating someone poorly out of jealousy or envy?
- Jonathan’s loyalty – Saul’s son remains loyal to David in spite of his dad’s jealousy, and in spite of the fact that David’s life will keep Jonathan from ever being king. Jonathan accepts the lot God has given him and loves David as a brother. Are you loyal to your friends? To God’s people? Even to your own hurt? Even when others are against them (and may turn against you)?
I am convinced that the first step towards attaining a higher standard of holiness is to realize more fully the amazing sinfulness of sin.
Wobbly Christians who have no firm foothold in Christ are an easy prey for the devil. 
As long as he was looking at himself, he seemed enormous, and there was no room for God at all. But once he looked to God, he shrank back down to his proper size.
Most Christians pray sometimes, with some prayers and some degree of perseverance, for some of God’s people. But to replace “some” by “all” in each of these expressions would be to introduce us to a new dimension of prayer.