How do we know that God has turned His anger away from believers?

The phrase 'though thou wast angry with me, thine anger is turned away' in Isaiah 12:1 illustrates the profound truth of reconciliation in Christ. This turning away of God's anger signifies that through Christ's redemption, those who believe are no longer under God's wrath. The New Testament echoes this truth with 2 Corinthians 5:17-21, where God, through Christ, reconciles us to Himself, not imputing our trespasses to us. Our enmity with God born from sin is abolished, allowing believers to experience peace and security in their relationship with Him.