In Ephesians 4:8-10 the apostle Paul gives in capsule form the grand outline of the journey of Christ. Of course, since Christ is a type of God this passage outlines the journey of God Himself.
That is, God Himself descended from heaven to become Jesus of Nazareth. He lived as a man, was crucified, and died. He arose from the dead, and ascended into heaven where was revealed as God Almighty in the Second Coming. Thus, He who ascended is He who had descended. To God be the glory!
For more on this subject, see: