'Charge' in the Bible

But unto the married I give charge, yea not I, but the Lord, That the wife depart not from her husband

(but even if she does leave him, let her remain single or else be reconciled to her husband) and that the husband should not leave his wife.

What is my reward then? Verily that, when I preach the gospel, I may make the gospel of Christ without charge, that I abuse not my power in the gospel.

But in giving you this charge, I praise you not, that ye come together not for the better but for the worse.