5 Therefore I, your fellow elder and a witness of the sufferings of Christ, and* also a sharer of the glory that is going to be revealed, exhort the elders among you: 2 shepherd the flock of God among you, exercising oversight not by compulsion but willingly, in accordance with God, and not greedily but eagerly, 3 and not as lording it over ⌊those under your care⌋a, but being examples for the flock. 4 And when* the chief Shepherd appears, you will receive the unfading crown of glory.
The conjunction “and” is supplied here to make it clear that the following phrase refers also to the author of the letter and not to Christ
Literally “the portion”
Here “when” is supplied as a component of the temporal genitive absolute participle (“appears”)