1 Samuel 20:39 KJV

But the lad knew not any thing: only Jonathan and David knew the matter.
1 Samuel 20:39, King James Version

In context

38 And Jonathan cried after the lad, Make speed, haste, stay not. And Jonathan’s lad gathered up the arrows, and came to his master.

39 But the lad knew not any thing: only Jonathan and David knew the matter.

40 And Jonathan gave his artillery unto his lad, and said unto him, Go, carry them to the city.