1 Corinthians 7:10–11
10 Now to the married I command, yet not I but the Lord: A wife is not to depart from her husband.
11 But even if she does depart, let her remain unmarried or be reconciled to her husband. And a husband is not to divorce his wife.
This is a command from Paul (from the Lord) to the married couple. The word depart is better translated separate. The original command for marriage was that the two (one man and one woman) should become one flesh–now, Paul reinforces that by saying a married couple is not to separate. This is the command.
The husband is not supposed to kick out his wife or leave her, and the wife is not supposed to kick out her husband or leave him. Don’t let there be a separation from each other.
The reality is, separation does happen. If a wife does separate, she is to remain unmarried or be reconciled to her husband. Reconciliation should always be the goal.
The husband is not to divorce (let her go). This doesn’t mean that a husband is to hold his wife captive. It means he is to do everything he can to keep a healthy marriage in place. A couple’s marriage can stay together if the believing husband leads his wife in a godly manner. Paul will address the unbelieving husband later.