And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith. (Philippians 3:9)
Righteousness refers to our standing with God. Religions have always presented ways for people to do specific tasks, sacrifices, and activities to prove they were worthy to stand before God as righteous.
Paul explained in his epistle to the church in Philippi that his righteousness had nothing to do with his performance. The Judaizers in the early church were teaching righteousness through works. They believed that for Christians to find themselves close to God, they had to strictly follow every law of the Old Covenant, including circumcision.
Paul understood that under the New Covenant, righteousness was no longer based on man's ability to perform good tasks or be holier than their neighbor.
Now, because of the faith of Christ, we are counted righteous through our faith.
The Greek word for faith is pistis and means faith, trust, confidence, or reliance.
When our reliance isn't in our ability but entirely on God, God counts Christ's righteousness on our behalf.
We have been given Jesus' righteousness. How much more righteous could anyone be?
Practical Application – When you are tempted to say that you are not smart enough, holy enough, or good enough to please God, say out loud, “Jesus gave me His righteousness as a gift, and I accept it by faith!”
Romans 3:22; 2 Corinthians 5:21