'Useful' in the Bible

All Scripture is God-breathed and is useful for teaching, for reproof, for correction, and for training in righteousness,

Only Luke is with me. Get Mark and bring him with you, for he is useful in my ministry.

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

For when the ground soaks up rain that often falls on it and continues producing vegetation useful to those for whom it is cultivated, it receives a blessing from God.