Chasidut zu Schemuel II 23:8

In Samuel II 23,8 the author lists 30 “heroes” that ‎surrounded David, there is an interesting comment by ‎‎Rashi on verse 18 about Avishai, described as the ‎ראש ‏השלישי‎, being the leader of a group of “three.” Rashi says ‎that this group of three was free from sin. This sounds plausible ‎as the attributes possessed by David, as listed in Samuel I 16,18 ‎are ‎גבור חיל, נבון, ואיש תאר‎, “a capable, stalwart fellow, sensible, ‎and of handsome appearance.” These three attributes ‎distinguished Joseph from his early youth. When Joseph had a ‎vision of David who possessed attributes similar to his own, this ‎prompted him to donate 37 years of his life so that David would ‎be able to accomplish his purpose in life. He most certainly did ‎not want to commit a sin that would make him forfeit the chance ‎of being compared with the illustrious David.‎