וַיַּ֨עַן דָּוִ֜ד וַיֹּ֣אמֶר ׀ אֶל־אֲחִימֶ֣לֶךְ הַחִתִּ֗י וְאֶל־אֲבִישַׁ֨י בֶּן־צְרוּיָ֜ה אֲחִ֤י יוֹאָב֙ לֵאמֹ֔ר מִֽי־יֵרֵ֥ד אִתִּ֛י אֶל־שָׁא֖וּל אֶל־הַֽמַּחֲנֶ֑ה וַיֹּ֣אמֶר אֲבִישַׁ֔י אֲנִ֖י אֵרֵ֥ד עִמָּֽךְ׃
Then answered David and said to Ahimelech the Hittite, and to Abishai the son of Zeruiah, brother to Joab, saying: ‘Who will go down with me to Saul to the camp?’ And Abishai said: ‘I will go down with thee.’
Read Jewish philosophy on I Samuel 26:6: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.