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101. Q. But may we swear an oath
     by the name of God in a godly manner?

A. Yes, when the government demands it
of its subjects, or when necessity requires it,
in order to maintain and promote fidelity and truth,
to God's glory and for our neighbor's good. Such oath-taking is based on God's Word and was therefore rightly used by saints in the Old and the New Testament.

102. Q. May we also swear by saints
     or other creatures?

A. No. A lawful oath is a calling upon God, who alone knows the heart,
to bear witness to the truth, and to punish me if I swear falsely.
No creature is worthy of such honor