'Assistant' in the Bible

And Moses got up, and Joshua, his assistant, and Moses went up to the mountain of God.

And Yahweh would speak to Moses face to face, as a man speaks to his neighbor. And he would return to the camp, and his assistant Joshua the son of Nun, a young man, did not leave the middle of the tent.

And Joshua son of Nun, the assistant of Moses from time of his youth, answered, "Moses, my lord, stop them."

Joshua, the son of Nun, {your assistant}, will go there; encourage him because he will cause Israel to inherit it.

After the death of Moses the servant of Yahweh, Yahweh said to Joshua son of Nun, the assistant of Moses, saying,

And [when they] came to Salamis, they began to proclaim the word of God in the synagogues of the Jews. And they also had John [as] assistant.