Adam Clarke on 1 Corinthians 7:23

Ye are bought with a price - As truly as your bodies have become the property of your masters, in consequence of his paying down a price for you; so sure you are now the Lord's property, in consequence of your being purchased by the blood of Christ.

Some render this verse interrogatively: Are ye bought with a price from your slavery? Do not again become slaves of men. Never sell yourselves; prefer and retain your liberty now that ye have acquired it.

In these verses the apostle shows that the Christian religion does not abolish our civil connections; in reference to them, where it finds us, there it leaves us. In whatever relation we stood before our embracing Christianity, there we stand still; our secular condition being no farther changed than as it may be affected by the amelioration of our moral character. But slavery, and all buying and selling of the bodies and souls of men, no matter what color or complexion, is a high offense against the holy and just God, and a gross and unprincipled attack on the liberty and rights of our fellow creatures.