How do we know Jesus has the power to save?

The power of Jesus to save is firmly rooted in the Scriptures, particularly in Acts 4:12, which states that there is no other name given under heaven among men whereby we must be saved. This declaration speaks to the exclusive authority and capability of Jesus Christ as the Savior. Jesus Himself asserts this power in Matthew 28:18, stating that all authority in heaven and on earth has been given to Him. This power is essential for the full assurance of salvation, enabling Him to effectively save sinners to the uttermost as confirmed in John 10:28, where He promises that His sheep shall never perish.