Heidelberg Catechism · Lord's Day 21
54. What do you believe concerning the holy catholic Church?
Answer
That the Son of God, out of the whole human race, from the beginning of the world to its end, gathers, defends, and preserves for himself, by his Spirit and Word, in the unity of the true faith, a Church chosen to everlasting life. And that I am and forever shall remain a living member of this Church.
Scripture references
John 10:11 · John 10:16 · Acts 13:48 · Ephesians 1:10-13 · Ephesians 4:3-6 · Ephesians 5:25-27 · 1 Peter 1:3-5
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