Two are better than one; because they have a good reward for their labour. For if they fall, the one will lift up his fellow: but woe to him that is alone when he falleth; for he hath not another to help him up.
–Ecclesiastes 4:9-10 (KJV)–

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Dr. Leland Ryken, Worldly Saints (Zondervan, 1986), chs. 2, 4.

Grant Sabatier, Financial Freedom (Avery, 2019).

William Mathews, Getting On In the World (S. C. Griggs, 1879).

Richard Steele, The Religious Tradesman (Sprinkle Publications, 1989).

Richard Baxter, Chapters from A Christian Directory (G. Bell & Sons, 1925).

Robert Allen, Multiple Streams of Income (Nightingale-Conant, 2014).

Entrepreneur (Entrepreneur Media, 2024).