DAVID is SAUL’s ENEMY Jonathan can’t believe that his dad wants his best friend dead SO DAVID AND JONATHAN HATCH A PLAN
It involves a FEAST, ARROWS and a MESSAGE
Here are the 2 outcomes : 1. If Saul says okay with David not being at the feast - Jonathan must shoot the arrows and call THEY ARE ON THIS SIDE OF YOU 2. But if Saul is MAD - Jonathan must call out - THE ARROWS ARE BEYOND YOU - which means run for your life
As it happened Saul is so angry he even tries to KILL HIS OWN SON!
So Jonathan knew that David was in real danger!! And he went out to warn David with their planned arrow message
KEY VERSE 1 SAMUEL 20:13-17
Jonathan asks David to protect his household if he dies