Habakkuk 2:4

Habakkuk 2:4 See, he who is puffed up, his soul is not upright within him, But the righteous one will live by his faith. 

Footnote on "but"

This word, quoted three times in the New Testament by the apostle Paul, unveils God’s eternal salvation given to sinners. According to the background of this book, both Israel (God’s elect) and the Chaldeans (the nations) were under God’s judgment. Under God’s judgment all sinners, whether Jews or Gentiles, are destined to die. The unique way for sinners to escape God’s judgment and obtain God’s eternal salvation is to believe in God’s embodiment, Christ, that they may become righteous and be justified in order to have life and live. God’s eternal salvation is to save our entire being — spirit, soul, and body — for eternity. The way for us to receive such a salvation is to believe in Christ so that we may be justified by God and thus be qualified to have the eternal, divine life, and live by that life.