'Command' in the Bible

Thus much in the way of concession, not of command.

This is what I command in all the Churches. Was any one already circumcised when called? Let him not have recourse to the surgeons. Was any one uncircumcised when called? Let him remain uncircumcised.

Concerning unmarried women I have no command to give you from the Lord; but I offer you my opinion, which is that of a man who, through the Lord's mercy, is deserving of your confidence.

If any one deems himself to be a Prophet or a man with spiritual gifts, let him recognize as the Lord's command all that I am now writing to you.