'Useful' in the Bible

So if anyone purifies himself from anything dishonorable, he will be a special instrument, set apart, useful to the Master, prepared for every good work.

Only Luke is with me. Bring Mark with you, for he is useful to me in the ministry.

Once he was useless to you, but now he is useful both to you and to me.

For ground that has drunk the rain that has often fallen on it and that produces vegetation useful to those it is cultivated for receives a blessing from God.