Unbelief is described as an evil heart because it actively suppresses the truth of God and shows enmity towards Him.
Unbelief is characterized as an evil heart in scripture because it not only rejects God's truth but is also rooted in a profound enmity against Him, which is revealed in passages like Hebrews 3:12, where it warns against an evil heart of unbelief. This rejection is often accompanied by an active suppression of the truth, as indicated in Romans 1:18, which states that people hold down the truth in unrighteousness. Those exhibiting unbelief demonstrate a self-righteousness that believes they can attain goodness apart from God, ignoring the reality of sin that pervades every human heart. This kind of disbelief ultimately leads individuals away from salvation, affirming their separation from God and their need for a Saviour who reveals true righteousness.
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