'Companion' in the Bible

and not only this, but he has also been appointed by the churches to travel with us in regard to this gracious offering which we are administering for the glory of the Lord Himself, and to show our eagerness [as believers to help one another].

However, I thought it necessary to send back to you Epaphroditus, [who has been] my brother and companion and fellow soldier, who was also sent as your messenger to take care of my needs.

I, John, your brother and companion in the tribulation and kingdom and patient endurance which are in Jesus, was on the island called Patmos, [exiled there] because of [my preaching of] the word of God [regarding eternal salvation] and the testimony of Jesus Christ.