John 14:16

And I will pray the Father
, Here Christ speaks as Mediator, and promises his disciples, that he would intercede for them with the Father; which is designed as an encouragement to them to ask for what they want, in his name, and to comfort their hearts, which were troubled at the news of his departure from them;

and he shall give you another Comforter.
This is no inconsiderable proof of a trinity of persons in the Godhead; here is the Father prayed unto, the Son in human nature praying, and the Holy Ghost the Comforter prayed for; who is the gift of the Father, through the prevalent mediation of the Son, and is another "Comforter"; distinct from the Messiah, to whom reference is here had! One of the names of the Messiah, with the Jews, is (Mxnm) ^F21, "a Comforter"; such an one Jesus had been to his disciples; and now he was about to leave them, and for their support under their sorrows, he promises to use his interest with his Father, that he would give them another Comforter, meaning the Spirit, who performs this his work and office, by taking of the things of Christ, and showing them to his people; by shedding abroad the love of the Father, and of the Son, into their hearts; by opening and applying the precious promises of the Gospel to them; by being a spirit of adoption in them; and by abiding with them as the seal, earnest, and pledge of their future glory; and with this view Christ promises to pray for him,

that he may abide with you for ever:
not a few years only, as I have done, but as long as you live; and with all those that shall succeed you in the work of the ministry, and with the church, and all true believers unto the end of the world: this is a proof of the saints' final perseverance. When we consider these words, in connection with the preceding exhortation, to keep the commands of Christ, and as an encouragement so to do, it brings to mind a saying of R. Eliezer ben Jacob ^F23;

``he that does one commandment gets for himself (dxa jylqrp) , (ena paraklhton) , the very word here used, "one advocate", or "comforter"; and he that transgresses one command, gets for himself one accuser.''