[roamer_1]

Christians can repent and seek forgiveness in an instant, the sacrifice has already been made.

How easy it for Jews to seek forgiveness when a burnt offering is required? Do they do burnt offerings in modern temples?

If the burnt offering was the efficacious element, there would be no need for Messiah... All of Israel would have been made continually saved, and corruption could not have entered in. Do you really think your statement can be true?

[Tzfat]

Ah, efficacious in what way is the question that should be asked. The book of Hebrews was written in kal v'chomer style. It is the "how much more" logic that is missing from most people's understanding. Watch the logic here:

13  For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have been defiled, sanctify [present tense] for the cleansing of the flesh, 14  how much more will the blood of Messiah who through the eternal Spirit offered Himself without blemish to G-d, cleanse your conscience from dead works to serve the living G-d?  Hebrews 9:13-14

The author's point is to use the Temple system in a "greater than" format. In other words, the Temple worked (present tense, after Messiah's resurrection), SO HOW MUCH MORE does Messiah's work cleanse. Whereas the Temple provided temporary covering, Messiah give eternal. To deny the efficaciousness of the Temple (that the Almighty decreed) is to deny the efficaciousness of Messiah's work.