"If anything is clear from the above verse it is that blamelessness does not mean "sinless". The people described, while guilty of evil deeds, can still be considered "holy and blameless" through the death of Christ on their behalf."
But what about WITHOUT belief in Christ? Can a man or woman be holy and blameless in spite of his/her sins without belief in Christ?
Job did not believe in Christ when he was blameless.
Zecharaiah and Elizabeth did not believe in Christ when she was blameless.
He had not been conceived yet, let alone born, when they lived (assuming for the sake of discussion that Job was an actual person and not a purely literary figure).
***But what about WITHOUT belief in Christ?***
The OT saints look forward to Christ. We look back to Christ.
***Job did not believe in Christ when he was blameless. ***
Job WAS looking forward to Christ and the resurrection.
"For I know that my redeemer liveth, and that he shall stand at the latter day upon the earth: And though after my skin worms destroy this body, yet in my flesh shall I see God:"
- Job 19
***Zecharaiah and Elizabeth did not believe in Christ***
They too were looking forward to Christ. That's why Elizebeth was overjoyed to hear of Mary's news. And Zechariah knew of the promise of the coming Messiah.
Remember when in his song he said...
"...He has raised up a horn of salvation for us in the house of his servant David (as he said through his holy prophets of long ago)"
They, like Simeon and Anna, other righteous and devout people of the day, were "waiting for the consolation of Israel". Luke 2:25