Ugh, so many quotes of my posts:
The visible Church is made up of all people professing faith in Christ and obedience unto God not destroying their own profession by any errors everting the foundation, or unholiness of conversation, and the invisible is tied to justification which is same Old and New, for while the justification of believers under the Old Testament was, in all these respects, one and the same with the justification of believers under the New Testament (Gal. 3:9; Rom. 4:22-24), this does not rule out only God gives the grace of regeneration to anyone - naturally born or proselytizing.