I suspect that this would be an inferential conclusion, and thus would have to be considered a matter of personal conviction, rather than as a clear biblical prohibition.
It seems to me that one has trouble defending this view from Scripture.
But when 30 hit, let’s just say God and me were in a fight.
You go to youth group, you love Jesus, you meet someone, you graduate high school, you get married, and as the fairy tales say, “You live happily ever after.” When I was 19 I was ready. At 27, I understood and accepted that God was using the last few years to prepare me for marriage.
Does the Old Testament have anything to say about marriages among God’s people and unbelievers?
Yes: “An alien living among you who wants to celebrate the LORD’s Passover must have all the males in his household circumcised; then he may take part like one born in the land. Exodus These scriptures tell us that quite clearly even in the Old Testament God is very protective and serious about His followers being involved with people who did not follow God.