1 Samuel 20:9

And Jonathan saith, 'Far be it from thee! for I certainly do not know that the evil hath been determined by my father to come upon thee, and I do not declare it to thee.'

1 Samuel 19:2

and Jonathan son of Saul delighted exceedingly in David, and Jonathan declareth to David, saying, 'Saul my father is seeking to put thee to death, and, now, take heed, I pray thee, in the morning, and thou hast abode in a secret place, and been hidden,

1 Samuel 20:38

and Jonathan calleth after the youth, 'Speed, haste, stand not;' and Jonathan's youth gathereth the arrows, and cometh unto his lord.

1 Samuel 20:42

and Jonathan saith to David, 'Go in peace, in that we have sworn -- we two -- in the name of Jehovah, saying, Jehovah is between me and thee, and between my seed and thy seed -- unto the age;' and he riseth and goeth; and Jonathan hath gone in to the city.

Treasury of Scripture Knowledge

Summary

And Jonathan said, Far be it from thee: for if I knew certainly that evil were determined by my father to come upon thee, then would not I tell it thee?

Bible References

Then would

1 Samuel 20:38
and Jonathan calleth after the youth, 'Speed, haste, stand not;' and Jonathan's youth gathereth the arrows, and cometh unto his lord.
1 Samuel 19:2
and Jonathan son of Saul delighted exceedingly in David, and Jonathan declareth to David, saying, 'Saul my father is seeking to put thee to death, and, now, take heed, I pray thee, in the morning, and thou hast abode in a secret place, and been hidden,