1 Samuel 19:1

And Saul said to his son Jonathan, and to all his servants, to kill David.

1 Samuel 18:1

And it happened when he had finished speaking to Saul, the soul of Jonathan was joined with the soul of David, and Jonathan loved him as he did his own soul.

1 Samuel 18:9

And Saul eyed David from that day and forward.

Treasury of Scripture Knowledge

Summary

And Saul spake to Jonathan his son, and to all his servants, that they should kill David.

Bible References

And saul

Ecclesiastes 9:3
This is an evil among all things that are done under the sun, that there is one event to all. Yea, also the heart of the sons of men is full of evil, and madness is in their heart while they live, and after that they go to the dead.
Jeremiah 9:3
And they bend their tongues like their bow for lies. But they are not mighty for the truth on the earth; for they go from evil to evil, and they do not know Me, says Jehovah.
2 Timothy 3:13
But evil men and seducers will go forward to worse, deceiving and being deceived.