'Atonement' in the Bible

Now much time had been lost, and navigation was dangerous, because even [the time for] the fast (Day of Atonement) was already over, so Paul began to strongly warn them,

whom God offered as a place where atonement by the Messiah's blood would occur through faith. He did this to demonstrate his righteousness, because he had waited patiently to deal with sins committed in the past.

And not only so, but we also joy in God through our Lord Jesus Christ, by whom we have now received the atonement.

And such were some of you [before you believed]. But you were washed [by the atoning sacrifice of Christ], you were sanctified [set apart for God, and made holy], you were justified [declared free of guilt] in the name of the Lord Jesus Christ and in the [Holy] Spirit of our God [the source of the believer’s new life and changed behavior].

Therefore he had to be made like his brothers and sisters in every respect, so that he could become a merciful and faithful high priest in things relating to God, to make atonement for the sins of the people.

Above it were the cherubim of glory overshadowing the place of atonement. (We cannot discuss these things in detail now.)

And because of this He is the negotiator of a new Covenant, in order that, since a life has been given in atonement for the offences committed under the first Covenant, those who have been called may receive the eternal inheritance which has been promised to them.