In the New Testament, which book says Noah built the ark by faith?

In the New Testament, the Epistle to the Hebrews says Noah built the ark by faith.

Hebrews 11:7 presents Noah as an example of faith. It says that Noah, warned about events not yet seen, built an ark to save his household and thereby condemned the world while becoming an heir of the righteousness associated with faith. The verse interprets the Genesis story rather than retelling every construction detail.

Hebrews 11 is commonly called the “faith chapter” because it surveys figures from the Hebrew Scriptures and describes how faith shaped their actions. Noah appears among examples including Abel, Enoch, Abraham, Sarah, Moses, and others.

The passage is part of Christian interpretation of Noah, while the primary Flood narrative appears in Genesis chapters 6–9. Other New Testament references to Noah occur in Matthew, Luke, and 1 Peter, but Hebrews is the book that explicitly uses Noah's ark-building as an example of faith.