Hl GIANCULA,
The signs and wonders that Jehovah gave us, added to the Bible writings completes the Bible's outline directed to us. By using the animals representing certain people it just makes it easier to understand Jehovah's direction.
Besides this, the number 144,000 stands alone with its exact numbeerrneeded in heaven. Its quite clear that they are brought to heaven only after the places are prepared. Only after the places were prepared by Michael, could Jesus call the 12 apostles to their 12 thrones after sitting on his own throne. Just the fact that the 12 apostles are the foundation stones of the 144,000 makes then an elite group chosen from the earth to replace the fallen angels
To insist that the 144,000 are all Jews or just a large symbolic number is pushing the truth beyond the boundaries of sound biblical understanding.