The answer is: Hebrews

Hebrews 9:22 - This verse explains the necessity of bloodshed for atonement, fulfilled ultimately in Christ’s sacrifice.

In the book of Hebrews, we see a profound theological exploration of sacrifice and atonement that transcends just one verse. The writer dives deep into the ways ancient sacrifices foreshadow the ultimate offering: the sacrifice of Jesus. While Hebrews 9:22 emphasizes the necessity of bloodshed for forgiveness, it's helpful to remember that this isn't an isolated doctrine.

Picture the scene—the Israelite tradition, steeped in sacrificial rituals, where the blood of lambs and goats symbolized atonement. This background gives a richer context to the author’s argument. Interestingly, the notion of sacrifice isn’t just found in one place; echoes can be traced through Levitical laws in the Old Testament showing that restoration often required an offering.

Furthermore, Hebrews draws connections to the Day of Atonement rituals, where a scapegoat was symbolically burdened with the sins of the people before being sent into the wilderness (Leviticus 16). This action represents not just temporary forgiveness but the heartfelt desire for complete removal of sin from the community.

Additionally, the idea of blood symbolism surfaces repeatedly across cultures and history, suggesting that the need for a powerful ritual act to signify deep changes is a universal theme. As we reflect on Hebrews, we can appreciate not just the sacrifice itself, but the significant shift from traditional rituals to a new understanding of grace and redemption offered to all. This framework broadens our perspective on forgiveness and what it means to people of various faiths and backgrounds throughout history.