申命記 20:5 註釋：Rashi, Ibn Ezra, Sforno & Rabbeinu Bahya

ולא חנכו [WHAT MAN IS THERE THAT HATH BUILT A NEW HOUSE] AND HATH NOT DEDICATED IT — i.e. has not yet dwelt in it. The term חנך denotes beginning a thing (here, it means beginning to live in it; cf. Rashi on Genesis 14:14).

inaugurated it as in “the dedication of the altar” [Numbers 7: 10], and also “initiate the child” [Proverbs 22: 6] (from which our Sages, of blessed memory, derived the principle that one must educate one’s children [Qiddushin 30a]). The reason for these commandments is that his attention, and all of his desires, are directed to dedicating his house. Thus, his thoughts are on his house, and not on the battle; consequently, he will flee, and he will induce others to flee.

פן ימות במלחמה ואיש אחר יחנכנו, perhaps the man in question had been guilty of a sin on account of which he would be punished by death or one of the punishments mentioned in the Tochahach, the lengthy warnings of Moses in chapter 28. His death would undermine the morale of his brothers in arms.

ואיש אחר יחנכנו [LEST HE DIE IN THE WAR] AND ANOTHER MAN DEDICATE IT — which is a matter that causes grief of mind.