Christ is the one way through whom we must of necessity seek salvation if we would be saved (see John 14:6; 17:3). The plan of salvation offered through Jesus Christ
(1) glorifies God as moral ruler,
(2) upholds God’s law as the rule of government,
(3) shows the mark of its source in divine revelation,
(4) provides, through the vicarious atonement, for the needs of men as sinners, who are otherwise under God’s condemnation.
Christ is the one mediator between man and God (1 Tim. 2:5).
None other name.
See on ch. 3:16. Peter had learned to attach to the thought of the name the full personality and power of the possessor of the name. To those who had known and accepted Him, the name of Jesus Christ of Nazareth was the one true source of deliverance and salvation.
Neither is there salvation.
Peter intimates that the physical cure of the lame man is an outward indication of Jesus’ power of salvation for the soul, which the lame man had also received. The eyewitnesses were to conclude from the results produced by the injunction, “Arise, and walk,” that the same power could just as surely bring the greater blessing of spiritual salvation (see Matt. 9:5). The salvation of which Peter was speaking was the very thing the rulers were professing to seek. Peter’s claim that Christ is the only Saviour is exactly in line with the claims Jesus Himself made as to His uniqueness (see John 3:16; 14:6).