Most modern Bibles change the faith of Christ in Romans 3:22; Galatians 2:16,20; 3:22; Ephesians 3:12; Philippians 3:9 and Titus 1:1 to faith in Christ. In Titus they change who God’s elect is, making the verse senseless.
The few who remain faithful to the correct text put a footnote by these verses saying the faithfulness of Christ.
This not only changes and muddies an important doctrine, it diminishes how the righteousness of God is manifested.