וַיַּגֵּ֤ד יְהוֹנָתָן֙ לְדָוִ֣ד לֵאמֹ֔ר מְבַקֵּ֛שׁ שָׁא֥וּל אָבִ֖י לַהֲמִיתֶ֑ךָ וְעַתָּה֙ הִשָּֽׁמֶר־נָ֣א בַבֹּ֔קֶר וְיָשַׁבְתָּ֥ בַסֵּ֖תֶר וְנַחְבֵּֽאתָ׃
And Jonathan told David, saying: ‘Saul my father seeketh to slay thee; now therefore, I pray thee, take heed to thyself in the morning, and abide in a secret place, and hide thyself.
Read halakhic rulings (Jewish law) on I Samuel 19:2: and classical halakhic sources.