David had an obedient heart. God said, I have found David son of Jessie, a man after my own heart. He will do everything I want him to do Acts 13:22 God's definition of an obedient heart is, one that will do everything God wants it to do.
The Bible describes the heart as most deceitful (Jeremiah 17:9). Therefore, must pay attention to our hearts, because God is constantly checking our hearts. An obedient heart does what God wants. You respond to God stems from the Heart.
How did Saul lose his kingdom? There was a battle and they needed to sacrifice so that God would intervene. Samuel was meant to do sacrifice but he did not show on time. The Philistine were closing in and the people of Israel were agitated. Saul must have though, I know how to do this. I have seen Samuel do it several times. Saul offered the sacrifice and just when he was done, Samuel walked in.
What have you done?, Samuel ask. Hear what Saul said, the Philistines were gathering and the people were complaining. So I compelled by the circumstances to disobey God. And Samuel said, you have done a foolishing thing. That was the day Saul lost his kingdom. Your response to God stems from your heart. Key thing to note here is, God cannot work with a disobedient Heart. David was just a shepherd boy, but he had an obedient heart. God could trust David to obey Him. Can God trust you to obey Him?
David had a wise heart and he behaved wisely. The Bible tells us that this made Saul afraid of David. It is one thing to have a wise heart and it is another thing to behave wisely. The heart is so crucial to our behavior and our destiny. I pray that the God of heaven will give you a wise and obedient heart.
What is the Holy Spirit stirring up in your heart? Talk to God about it and commit to a new direction. A God direction.