Quote: The Messiah’s return — the final revelation of Jesus Christ — is yet to be fulfilled.
Through faith [we] are shielded by God’s power until the coming of the salvation that is ready to be revealed in the last time. In this you greatly rejoice, though now for a little while you may have had to suffer grief in all kinds of trials. These have come so that your faith — of greater worth than gold, which perishes even though refined by fire — may be proved genuine and may result in praise, glory and honor when Jesus Christ is revealed (1 Peter 1:5-7).
Jesus Will Return! Are You Ready?
http://graceministries.in/?p=441
How long is the line of Adam and Eve? What if God has a number in His head (a quota) He wants to fill? I can't answer either of those questions.
But revelation is
progressive.
Maybe we're not suppose to be able to answer every question before they're revealed not that it will stop us from considering them and sometimes jumping to wrong conclusions.