When Sanctification Occurs Before Justification In this case it does:…

When Sanctification Occurs Before Justification
In this case it does:

I Corinthians 7:14
14 For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband; otherwise your children would be unclean, but now they are holy.

Here, the man hasn’t been saved, but he’s sanctified because his wife is saved. The children are also sanctified before they are old enough to understand the Gospel.

How does Paul’s use of ‘sanctified’ here fit with the idea that ‘sanctified’ refers to a specific experience after one is justified through faith in Christ? If Paul uses ‘sanctified’ in this way here, how is to justifiable to read Holiness-movement doctrine into the word ‘sanctified’ in other passages?