Respect the marriage which has made before the Lord.

1 Corinthians 7:1-19
Paul say this as a concession not as a command. since there is so much immorality, each man should have hos own wife. and each woman her own husband. they should fulfill their marital duty to each other.
The unmarried and the widows Paul said: it is good for them to stay unmarried, as Paul was, but if they cannot control themselves, they should marry, for it is better to marry than to burn with passion.
To the married Paul gave this command (not Paul but the Lord): A wife must not separate from her husband, and a husband must not divorce his wife.
For the unbelieving husband has been sanctified through his wife, and the unbelieving husband has been sanctified through her believing husband. If the unbeliever is willing to live with, he(she) must not divorce her(him).
If the unbeliever leaves,let him do so. A believing man or woman is not bound in such circumstances; God has called us to live in peace. How do you know, wife, whether you will save your husband? husband, whether you will save your wife?
Each one should retain the place in life that the Lord assigned to him and to which God has called him. This is the rule I lay down in all the churches.
Why?
In their letter to Paul, the Corinthians have raised six questions about single and married life.
1. Are married couples to continue normal sexual relation after conversion? Yes
2. Should single people marry? Paul prefers the single life - but only for those with the gift of self-control.
3. Is divorce between Christians permissible?
4.What about the unconverted husband of wife? Christians are to stick to their pagan partners, unless the partner wants separation.
5. It is not so clear. Most likely it is: Should engaged couples marry? This must be a matter for personal decision, but in the very trouble times Paul sees ahead, single people will find it easier to work out their Christian priorities.
6. May widows remarry? Yes, but Paul qualifies this.

Retain the place in life and live in peace, for the Lord called us and assigned to us. About the marriage Paul mentioned the rule very clear.
To be a Christian is Holy one but we have our mission that assigned from the Lord, so we should love our partner much more than other unbelievers.
How?
Do my work in my life. Let my home be a good testimony for the Lord. Respect the marriage which has made before the Lord.