וַיַּדְבְּק֣וּ פְלִשְׁתִּ֔ים אֶת־שָׁא֖וּל וְאֶת־בָּנָ֑יו וַיַּכּ֣וּ פְלִשְׁתִּ֗ים אֶת־יְהוֹנָתָ֧ן וְאֶת־אֲבִינָדָ֛ב וְאֶת־מַלְכִּי־שׁ֖וּעַ בְּנֵ֥י שָׁאֽוּל׃
And the Philistines followed hard upon Saul and upon his sons; and the Philistines slew Jonathan, and Abinadab, and Malchishua, the sons of Saul.
Read Kabbalistic (mystical) interpretations of I Samuel 31:2: Zohar and classical Jewish mystical sources, free online.