In John 17, Jesus is praying to the Father the night before He voluntarily gave His life on the cross. In the prayer, Jesus says this:
“Now, Father, glorify Me together with Yourself, with the glory which I had with You before the world was.” (v.5)
This is especially interesting, since Jehovah God says in Isaiah
“I am the LORD, that is My name;
I will not give My glory to another,
Nor My praise to graven images. (Is. 42.8)
” My glory I will not give to another.” (Is. 48.11)
So God in Isaiah, as designated by the name LORD, tells us that He will not give His glory to another, then repeats the same statement later for emphasis. Yet Jesus tells the Father in John 17 that Jesus shared God’s glory before the universe was created. Jesus also prays that the Father and Jesus will return to this state of glory, so that both are glorified together.
Jesus also hints at this in Mark 8.38, where He tells us that upon His return, He will have the glory of the Father.
Thus Jesus has the glory of the Father, and the Father is not giving His glory to another, for the Son and the Father are the one God.