“For they will turne away thy sonne from following mee, that they may serue other gods: so will the anger of the Lord be kindled against you, and destroy thee suddenly.”
1611 King James Version (KJV)
7:4 To serve other Gods - That is, there is manifest danger of apostacy and idolatry from such matches. Which reason doth both limit the law to such of these as are unconverted (otherwise Salmon married Rahab, #Matt 1:5|) and enlarge it to other idolatrous nations, as appears from #1Kin 11:2 Ezra 9:2 Neh 13:23|.