What does the Bible mean by confidence in Christ?

Biblical confidence is deeply rooted in the faithfulness of Christ rather than in ourselves. It is expressed in reliance on Christ for our salvation and spiritual life, as highlighted in Philippians 3:9 where the Apostle Paul emphasizes his desire to be found in Christ and not relying on his own righteousness. Our trust must be solely anchored in Christ’s ability to save and sustain us. This confidence emboldens believers to approach God for help and assurance, knowing that our standing is secure through Jesus' completed work.