<p>7:14 <em>For the unbelieving husband is sanctified in the wife, and the unbelieving wife is sanctified in the brother. Else were your children unclean; but now are they holy- </em>Those who come to the Faith already married have their marriage &quot;sanctified&quot; by God- if God did not do this, their children would be &quot;unclean; but now are they holy&quot;. This connects back to Paul's opening statements in 1 Cor. 1 that all in Christ are &quot;sanctified&quot;; but he has argued that the Corinthians were not appreciating nor acting according to the status they had potentially been given. And here again, because they didn't really believe or feel their own sanctification, they failed to see that their marriages were also sanctified. Every part of their lives was sanctified- including in the case of marriage to unbelievers, and including their children. The implication is that God does not see marriage in the world in the same way as He sees marriage between His children. The implication of 1 Cor. 7:14 seems to be that if an unbeliever has a relationship with an unbeliever, the resulting children are &quot;unclean&quot;, not sanctified, because the parent was not sanctified by being in Christ. &quot;Now<em> are</em> they holy&quot; is another example of Paul recognizing that they were in status sanctified before God, even if they failed to appreciate that as they should. Just as the Corinthians were sanctified by status but this was no guarantee of their salvation ultimately, so it would be unwise to argue that the children of believers are sanctified in the sense of being saved eternally. And in any case, surely having a believing parent doesn't mean that their children shall be saved in any case regardless of their personal faith. If we insist on seeing a parallel between sanctification and final salvation, surely we must draw a line at when &quot;their children&quot; are no longer covered by the believing parent when they come to maturity. But this question is not addressed here because quite simply the issue of salvation is not in view at all.</p>