'Assistant' in the Bible

So Moses arose with his assistant Joshua and went up the mountain of God.

The Lord spoke with Moses face to face, just as a man speaks with his friend. Then Moses would return to the camp, but his assistant, the young man Joshua son of Nun, would not leave the inside of the tent.

Joshua son of Nun, assistant to Moses since his youth, responded, “Moses, my lord, stop them!”

Arriving in Salamis, they proclaimed God’s message in the Jewish synagogues. They also had John as their assistant.