Jonathan called David, and Jonathan showed him all those things. Jonathan brought David to Saul, and he was in his presence, as before.
Jonathan’s appeal was successful, at least temporarily, and resulted in Saul solemnly vowing not to kill David (1 Samuel 19:6), which vow he broke shortly (1 Samuel 19:10). Later Jonathan was not as successful (1 Samuel 20:28-29). Nevertheless this time his appeal resulted in David’s restoration to the court and his continuing ministry to the king (1 Samuel 19:7).