'The Father glorifies me,' John 8:54There is it again. So certain is Jesus that he repeats it often. Here the emphasis is on the fact that Jesus doesn't need to seek his glory/honour/fame by pleasing people but by pleasing his Father. It is this that enables Jesus to speak robustly to the Jews in this story, even Jews who've come to believe in him. Jesus doesn't panda to or tickle the ears of, new believers. No, he speaks the truth even if the truth isn't going to be popular.
He does this because his Father glorifies him. That's how Jesus does and says what he does. The Father glorifies the Son, the Son lives to please the Father.