King James Version (KJV)
And David said to Achish, Surely thou shalt know what thy servant can do. And Achish said to David, Therefore will I make thee keeper of mine head for ever.
Modern English
David said to Achish, “Therefore you will know what your servant can do.” Achish said to David, “Therefore I will make you my bodyguard forever.”
Hebrew
וַיֹּ֤אמֶר דָּוִד֙ אֶל־אָכִ֔ישׁ לָכֵן֙ אַתָּ֣ה תֵדַ֔ע אֵ֥ת אֲשֶׁר־יַעֲשֶׂ֖ה עַבְדֶּ֑ךָ וַיֹּ֤אמֶר אָכִישׁ֙ אֶל־דָּוִ֔ד לָכֵ֗ן שֹׁמֵ֧ר לְרֹאשִׁ֛י אֲשִֽׂימְךָ֖ כָּל־הַיָּמִֽים׃
vayoʾmer david ʾel-ʾakiysh laken ʾatah tedaʿ ʾet ʾasher-yaʿasheh ʿabdeka vayoʾmer ʾakiysh ʾel-david laken shomer lroʾshiy ʾashiymka kal-hayamiym