Vade, without getting into the previous debate again - it is commonly understood by those of us who believe the Bible is inerrant that "all that there is" was made by Jesus Christ (John 1:3) --- i.e. the Father made all things by Jesus (Hebrews 1:2) --- who entered the physical realm once and will return. (Acts 1:11)
The Father and Jesus are One (John 10:30) - Jesus left to return to heaven, so that the Holy Spirit could come (John 16:7)
Hence, with the Trinity - the statement "that He never left the building," and "the Creator will return" are both true.
As Creator of all that there is there is nothing of which anything can exist but Himself. Thus, as the Scriptures say in Acts 17:28 For in him we live, and move, and have our being