When Christ ascended back to heaven, a new “dispensation” began, in which He is now hidden from our sight. But He didn’t desert us, oh no! He who descended to the earth to become a man ascended back to heaven and God His Father in order to fill all things and make it possible by His Spirit, for His life and mission to continue to all the world!
The hymn by the Venerable Bede, from about 700 AD, which I played at the end of the sermon, is available here: https://www.youtube.com/watch?v=nM86mLRqCcc