'Discharged' in the Bible

I see what to do, in order that when I am discharged from the stewardship they may give me a home in their own houses.'

And Barnabas and Saul returned from Jerusalem, having discharged their mission, and they brought with them John, surnamed Mark.

Then Paul, fixing a steady gaze on the Sanhedrin, said, "Brethren, it is with a perfectly clear conscience that I have discharged my duties before God up to this day."

For the woman that hath a husband is bound by law to the husband while he liveth; but if the husband die, she is discharged from the law of the husband.

But now we have been discharged from the law, having died to that wherein we were held; so that we serve in newness of the spirit, and not in oldness of the letter.