First of all, He came to atone for sin, so that its power over man was destroyed, and free access to God's presence and favour was secured.

首先，祂赦免我们的罪，洗净我们的不义，使罪不再辖制我们，且使人得与上帝和好，能进到祂的面前。

youdao

What will you do to atone for this sin?

你将做什么来赎这罪呢?

《新英汉大辞典》

God gave me the punishment I deserve... I'm willing to use the rest of my life to make up for this mistake, to atone for my sin.

上帝给了我应得的惩罚……我愿意用我的余生来弥补这个错误，以抵偿我的罪过。

youdao

Across the political spectrum philanthropy seems to have become the modern equivalent of indulgences purchased by the rich to atone for their participation in the sin of moneymaking.

FORBES: The Moral Limits of Wealth