Deuteronomy 15:9

15:9 Be careful lest you entertain the wicked thought that the seventh year, the year of cancellation of debts, has almost arrived, and your attitude be wrong toward your impoverished fellow Israelite and you do not lend him anything; he will cry out to the Lord against you and you will be regarded as having sinned.

Deuteronomy 25:5

Respect for the Sanctity of Others

25:5 If brothers live together and one of them dies without having a son, the dead man’s wife must not remarry someone outside the family. Instead, her late husband’s brother must go to her, marry her, and perform the duty of a brother-in-law.