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The visible church, also catholic or worldwide under the good news of Christ (not confined to the one nation, Israel, as under the Old Testament), consists of every person in the world professing faith in Jesus Christ and their children (WCF 25.2).

We are agreed that their "membership" (meaning the fact that they are considered part of the visible church) does not assume either reprobation or regeneration.

But the covenant children of believers are, according to the WCF, members of the visible church.