Betrothed a wife, and hath not taken her? - It was customary among the Jews to contract matrimony, espouse or betroth, and for some considerable time to leave the parties in the houses of their respective parents: when the bridegroom had made proper preparations, then the bride was brought home to his house, and thus the marriage was consummated. The provisions in this verse refer to a case of this kind; for it was deemed an excessive hardship for a person to be obliged to go to battle, where there was a probability of his being slain, who had left a new house unfinished; a newly purchased heritage half tilled; or a wife with whom he had just contracted marriage. Homer represents the case of Protesilaus as very afflicting, who was obliged to go to the Trojan war, leaving his wife in the deepest distress, and his house unfinished.

Του δε και αμφιδρυφης αλοχος Φυλακῃ ελελειπτο,

Και δομος ἡμιτελης· τον δ' εκτανε Δαρδανος ανηρ,

Νηος αποθρωσκοντα πολυ πρωτιστον Αχαιων.

Iliad, 1. ii., ver. 100.

"A wife he left,

To rend in Phylace her bleeding cheeks,

And an unfinish'd mansion: first he died

Of all the Greeks; for as he leap'd to land,

Long ere the rest, a Dardan struck him dead."

Cowper.

And what man is there that hath betrothed a wife, and hath not taken her?.... Home to his house and bedded with her; has only betrothed her, but is not properly married to her, the nuptials are not completed; this the Jews understand of anyone betrothed to him, whether a virgin or a widow, or the wife of a deceased brother (yea, they say, if his brother is dead in war, he returns and comes home), but not of a former wife divorced and received again (m):

let him go and return unto his house, lest he die in battle, and another man take her; or marry her.

(m) Misn. Sotah, ib. sect. 2.

And what man is there that hath betrothed a wife, and hath not taken her? let him go and return unto his house, lest he die in the battle, and another man take her.

20:1-9 In the wars wherein Israel engaged according to the will of God, they might expect the Divine assistance. The Lord was to be their only confidence. In these respects they were types of the Christian's warfare. Those unwilling to fight, must be sent away. The unwillingness might arise from a man's outward condition. God would not be served by men forced against their will. Thy people shall be willing, Ps 110:3. In running the Christian race, and fighting the good fight of faith, we must lay aside all that would make us unwilling. If a man's unwillingness rose from weakness and fear, he had leave to return from the war. The reason here given is, lest his brethren's heart fail as well as his heart. We must take heed that we fear not with the fear of them that are afraid, Isa 8:12.