What does it mean to have substance in Christ?

The concept of 'substance' as presented in Scripture signifies the true essence of who we are before God. While Psalm 39 articulates our vanity at our best state, it highlights that any true substance comes from Christ. For believers, our identity is rooted not in self-achievements but in our union with Christ, who fulfills the law on our behalf. This understanding transforms how we view our worth and encourages us to live out our faith in grace and dependence on God for righteousness, fulfilling His purposes in our lives.