Melville Divinity Hall
Q. 102 · Lord’s Day 37

May we also swear by saints or other creatures?

Text: CRC/RCA 2011 · Read it at the source

No. A legitimate oath means calling upon God as the only one who knows my heart to witness to my truthfulness and to punish me if I swear falsely. No creature is worthy of such honor.

Scripture proofs
1
Rom. 9:1; 2 Cor. 1:23
2
Matt. 5:34-37; 23:16-22; James 5:12