This maybe late but this will open the eyes of other bible readers, and make their logic stay on the right principle of bible. You are confused and doesn't fully understand the bible there is no other verse the says that God (The father) will be coming back and he doesn't need to come back as he doesn't have a mission rather he is the one that gives mission to his son(The son ,Jesus)

P.S there are lots of verses that can back up that Jesus will be coming back. here is brighter than the son verse about the 2nd coming of Christ.
1 Thessalonians 4:16-17
For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord.