Melville Divinity Hall
Q. 25 · Lord’s Day 8

Since there is only one divine being,1 why do you speak of three: Father, Son, and Holy Spirit?

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

Because that is how God has revealed himself in his Word: these three distinct persons are one, true, eternal God.

Scripture proofs
1
Deut. 6:4; 1 Cor. 8:4, 6
2
Matt. 3:16-17; 28:18-19; Luke 4:18 (Isa. 61:1); John 14:26; 15:26; 2 Cor. 13:14; Gal. 4:6; Tit. 3:5-6