Answer: The duties required in the Eighth Commandment are, truth, faithfulness, and justice in contracts and commerce between man and man₁; rendering to everyone his due₂; restitution of goods unlawfully detained from the right owners thereof₃; giving and lending freely, according to our abilities, and the necessities of others₄; moderation of our judgments, wills, and affections concerning worldly goods₅; a provident care and study to get₆, keep, use, and dispose these things which are necessary and convenient for the sustentation of our nature, and suitable to our condition₇; a lawful calling₈, and diligence in it₉; frugality₁₀; avoiding unnecessary lawsuits₁₁ and suretyship, or other like engagements₁₂; and an endeavor, by all just and lawful means, to procure, preserve, and further the wealth and outward estate of others, as well as our own.₁₃

1. Ps 15:2, 4; Zech 7:4, 10; 8:16-17
2. Rom 13:7
3. Lev 6:2-5; Lk 19:8
4. Lk 6:30, 38; 1 Jn 3:17; Eph 4:28; Gal 6:10
5. 1 Tim 6:6-9; Gal 6:14
6. 1 Tim 5:8
7. Prov 27:23–27; Eccl 2:24; 3:12-13; 1 Tim 6:17-18; Isa 38:1; Mt 11:8
8. 1 Cor 7:20; Gen 2:15; 3:19
9. Eph 4:28; Prov 10:4
10. Jn 6:12; Prov 21:20
11. 1 Cor 6:1-9
12. Prov 6:1–6; 11:15
13. Lev 25:35; Dt 22:1-4; Ex 23:4-5; Gen 47:14, 20; Phil 2:4; Mt 22:39