'Behalf' in the Bible

just as you learned it from Epaphras, our beloved fellow bond-servant, who is a faithful servant of Christ on our behalf,

Now I rejoice in my sufferings for your sake, and in my flesh I do my share on behalf of His body, which is the church, in filling up what is lacking in Christ’s afflictions.

For I want you to know how great a struggle I have on your behalf and for those who are at Laodicea, and for all those who have not personally seen my face,