The glory was Gods presence and guidance, symbolic of the Holy Spirit.
John 14:15-18 – If you love Me, keep My commandments. And I will pray the Father, and He will give you another Helper, that He may abide with you foreverthe Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you. I will not leave you orphans; I will come to you.
