1 Samuel 20:2
And he said unto him, God forbid; thou shalt not die: behold, my father will do nothing either great or small, but that he will shew it me: and why should my father hide this thing from me? it is not so. And he said unto him, God forbid; thou shalt not die: behold, my father will do nothing either great or small, but that he will shew it me: and why should my father hide this thing from me? it is not so.
The verse belongs to the time after David defeated Goliath, when Saul kept David with him and would not let him return to his father's house. It stands within the account of Jonathan's soul being knit to David's, loving him as himself, making a covenant of brotherhood with him, and giving him his robe with his garments, sword, bow and girdle, while at the same time David was given important responsibilities and, by modesty, won the affection of the people and the royal household.
David comes to Jonathan wounded in spirit, longing to see his friend, conscious of his own innocence, and asking what he has done and what his wrong is that Saul seeks his life. The verse is Jonathan's reassurance to David that he will not die and is in no danger. Jonathan argues that his father does nothing important or minor without revealing it to him, so his father must be hiding nothing and David is safe. His confidence reflects the close bond between him and David.
Jonathan believes Saul has changed his intention and no longer means to take David's life. Because of the remarkable display of God's power over Saul at Ramah, Jonathan cannot believe his father would still harm David, since that would be open rebellion against God. David has little confidence in Saul's repentance and remains unconvinced, holding that he is still in mortal danger if Saul's mood changes. In the events of this chapter Jonathan becomes the means of preserving David's life when Saul attempts to kill him.