William Burkitt on John 17:22

Here observe, 1. Christ's communication of that glory to believers, which he had received of the Father; that is, not his essential glory, but his mediatorial glory: The glory which thou gavest me. Now Christ hath no glory given him as God, but much glory bestowed upon him as Mediator.

Observe, 2. The end of this communication,why he gave his disciples that glory which the Father had given him; namely, that they might be one.

Learn, 1. That God the Father had bestowed much glory on Christ his Son, as he is Man, and Mediator of the church.

2. That the same glory for kind and substance, though not for measure and degree, which Christ as Mediator has received from the Father, is communicated to true believers.

3. That the great end of this communication was, and is, to oblige and enable his people to maintain a very strict union among themselves; The glory which thou gavest me, I have given them, that they may be one, even as we are one.

4. That unity amongst believers is part of that glory which Christ as Mediator hath obtained for them.