How do we know the importance of repentance in the Bible?

Exodus 33 illustrates that genuine repentance involves a conscious effort to remove any adornments that signify pride or self-reliance. When the Israelites removed their ornaments, it was a visible sign of their humility and recognition of their sinfulness. Repentance is vital because it reflects an understanding of one's need for God's mercy. As Peter stated, God resists the proud but gives grace to the humble. Thus, stripping away false securities leads to a clearer path to grace and acceptance before God, emphasizing that true worship arises from acknowledging one's complete reliance on Him.