[T Minus Four]

Not until Jesus returned to heaven was there any sacrifice for mankind offered. (Heb.9:24)

Can you explain what you mean here?

[count-your-change]

Sure. Earlier (9:12) Paul said that in contrast to the Levite priests Christ entered into the holy place (heaven) with his own blood and obtained an everlasting deliverance for man.

In vs. 24 Paul says Christ appeared in the holy place (heaven) before God “for us”. That this was different from the Levites offering sacrifices was that this sacrifice was once, not often as the high priest would do, entering to offer sacrifices on a yearly basis. (vs.25)

Obviously this only occurred following Christ's death and resurrection.