According to the Bible, they number only 144,000 and are selected from among the followers of Christ, starting with the faithful apostles. (Luke 22:28-30; John 14:2, 3; Revelation 7:4; 14:1, 3)
... The heavenly government of Christ Jesus and his 144,000 associates will progressively bring obedient mankind back to the perfection that our original parents, Adam and Eve, lost.