King Saul

20 David got out of Naioth in Ramah alive and went to Jonathan. “What do I do now? What wrong have I inflicted on your father that makes him so determined to kill me?”

² “Nothing,” said Jonathan. “You’ve done nothing wrong. And you’re not going to die. Really, you’re not! My father tells me everything. He does nothing, whether big or little, without confiding in me. So why would he do this behind my back? It can’t be.”
³ But David said, “Your father knows that we are the best of friends. So he says to himself, ‘Jonathan must know nothing of this. If he does, he’ll side with David.’ But it’s true—as sure as God lives, and as sure as you’re alive before me right now—he’s determined to kill me.”

 As this point of time, David must be thanking God for such a good brother and friend, Jonathan. We will always need a friend, in times of trials and tribulations, we need someone to guide us. Jonathan really walked with God. He really recognized that his power, his father's power does not come out from men, but God. He did not follow his father's footsteps but followed his Father's footsteps. It must have been hard for Jonathan, being trapped between his father and his good friend. It would have been easy for him to just agree with his father. But he fellow-shipped with God, and because of that, God spoke clearly to Him and guided him. Without God's guidance, he would not have build such a brotherly relationship with David. He might have just killed David, or ran away if he did not walk with God and build a relationship. Indeed Saul would not tell Jonathan about David, because he knows that Jonathan and David are brothers, best of friends. Regardless, walking close with God is the best thing to do, always.