But the atheist husband is not sanctified by the wife's faith. Jesus did not teach this.Nor did Paul.
https://www.biblestudytools.com/dictionary/sanctification/
The Holy Spirit is the dynamic of sanctification. Jesus said that he had to go away so that the Holy Spirit would indwell believers (
John 14:16-20 ). The "Holy" Spirit is so named not because he is more holy than the Father and the Son, but because his specific ministry vis--vis salvation is sanctification (
Rom 15:16 ;
1 Thess 4:3-4 ;
2 Thess 2:13 ;
1 Peter 1:2 ). The Spirit that inspired the Word of God now uses it to sanctify. Jesus, therefore, prayed concerning his own, "Sanctify them by the truth" (
John 17:17 ). The Holy Spirit is the Spirit of truth (
John 16:13 ). The blessing of the new covenant is the presence of the Spirit (
Ezek 36:27 ;
Gal 3:14 ).