'Onwards' in the Bible

so that the blood of all the Prophets, that is being shed from the creation of the world onwards, may be required from the present generation.

Yes, and all the Prophets, from Samuel onwards--all who have spoken--have also announced the coming of this present time.

In that case Christ would have needed to suffer many times, from the creation of the world onwards; but as a matter of fact He has appeared once for all, at the Close of the Ages, in order to do away with sin by the sacrifice of Himself.