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Theological term

Lawful Vow

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May 31, 2026

2LCF Chapter 23 - Of Lawful Oaths and Vows

Cameron Porter

Lawful oaths and vows occupy a distinct place in Christian ethics, grounded in the third commandment's demand for reverence toward the divine name and the ninth commandment's prohibition of false witness. This confession-study exposition of 1689 LBCF Chapter 23 distinguishes oaths (horizontal promises between men, made before God as witness) from vows (vertical commitments made directly to God), explains why both the Quaker rejection and Catholic corruption of oaths are condemned, and works through five paragraphs covering definition, solemnity, carefulness, integrity, and the lawful use of vows. The governing application is that the integrity of speech in all of life — family, church, and civic — flows from a rightly ordered fear of the God in whose name oaths are taken.