פירוש על מלכים א 1:52

If he shall show himself a worthy man, there shall not a hair of him fall to the earth: This means, "If he will put forth his strength to be a servant of the king and his commands like a worthy man, no harm will come to him for my part." And thus David sent to the men of Jabesh-Gilead, "Now therefore let your hands be strong, and be ye valiant." (2 Samuel 2:7)