וַיָּ֧שֶׂם דָּוִ֛ד אֶת־הַדְּבָרִ֥ים הָאֵ֖לֶּה בִּלְבָב֑וֹ וַיִּרָ֣א מְאֹ֔ד מִפְּנֵ֖י אָכִ֥ישׁ מֶֽלֶךְ־גַּֽת׃
And David laid up these words in his heart, and was sore afraid of Achish the king of Gath.
Find Talmudic references to I Samuel 21:13: , passages from the Talmud Bavli and Yerushalmi.