Everything the Father has is mine. That is why I said he takes what is mine and will announce it to you.
In context
13When the Spirit of truth comes, he will guide you into all the truth. He will not speak on his own; he will speak what he hears, and he will announce to you the things to come. 14He will glorify me, because he will take what is mine and announce it to you. 15Everything the Father has is mine. That is why I said he takes what is mine and will announce it to you. 16A little while, and you will see me no longer; then a little while again, and you will see me.” 17Some of his disciples said to one another, “What does he mean by telling us, ‘A little while and you will not see me; then a little while again and you will see me,’ and, ‘Because I am going to the Father’?”