Jesus saves because He is the one appointed by God, who provides forgiveness for sins through His sacrificial work.
The assurance of Jesus as the Savior comes from declarations in Scripture such as Matthew 1:21, which states, 'He shall save His people from their sins.' This emphasizes that His mission was preordained by God as part of an everlasting covenant of grace. Moreover, believers are assured of His saving work through faith, as Ephesians 1:4-5 highlights God's initiative in choosing His people for salvation from before the foundation of the world. The crux of this saving work is found in the substitutionary atonement of Christ, who bore the penalty for sin, ensuring that those who believe in Him are freed from its eternal consequences.
Scripture References:
Matthew 1:21, Ephesians 1:4-5
Commentary