How do we know that grace comes through Jesus Christ?

The New Testament, particularly in John 1:17, clearly states that 'the law was given through Moses; grace and truth came through Jesus Christ.' This delineation indicates that while the law served to expose sin and the inability of humanity to achieve righteousness, Jesus embodies the fullness of grace and truth, providing a way to redemption. His sacrificial atonement on the cross signifies that through Him, the barriers created by the law are removed, allowing believers to access the Father. The unveiling of God's grace is pivotal for Christians, as it emphasizes reliance on Christ's completed work rather than our efforts.