What is the origin of the myth?
After the death of Jesus’ apostles, by the beginning of the second century C.E., the early Church Fathers gained prominence. Describing their teachings, the New Catholic Encyclopedia (2003), Volume 6, page 687, says: “The general stream of teaching was that heavenly bliss is granted to the disembodied soul immediately after whatever necessary purification follows death.”
5 “Happy are the mild-tempered, since they will inherit the earth.
10 and you made them to be a kingdom and priests to our God, and they are to rule as kings over the earth.”
If everyone goes to heaven, why do the 144000 need to act as kings and priests and rule over Earth? No one would be there!