Husbands: Duty of, to Wives: Not to Leave Them, Though Unbelieving
Source: TTT
1 Corinthians 7:11, 12, 14, 16
But if she does, she must remain unmarried or else be reconciled to her husband. And a husband must not divorce his wife. / To the rest I say this (I, not the Lord): If a brother has an unbelieving wife and she is willing to live with him, he must not divorce her. / For the unbelieving husband is sanctified through his believing wife, and the unbelieving wife is sanctified through her believing husband. Otherwise your children would be unclean, but now they are holy.