For we [Christians] are the true circumcision, who worship God in spirit and by the Spirit of God and exult and glory and pride ourselves in Jesus Christ, and put no confidence or dependence [on what we are] in the flesh and on outward privileges and physical advantages and external appearances. —Philippians 3:3
God is merciful toward us and wants to bless and prosper us. He sees our heart attitude and our faith in Jesus. When we have confidence in God and His love and kindness, we can progress to living confidently and enjoying the life He wants for us. Note that I said confidence in God, not in ourselves. Usually, people think of confidence as self-confidence, such as TV self-help gurus or athletes promote when urging us to “Believe in yourself!”