What does the Bible say about Christ's sufficiency for salvation?

The doctrine of Christ's sufficiency is central to the gospel message. Scripture clearly states that there is no other name under heaven by which we must be saved (Acts 4:12). Christ's sacrifice on the cross was fully sufficient to atone for the sins of those He came to redeem. He declared, 'I have trodden the winepress alone,' signifying that He bore the weight of sin and judgment by Himself. Thus, redemption cannot be added to or diminished by human efforts; it rests solely on Christ's work, as affirmed in John 6:37, 'All that the Father gives me will come to me, and whoever comes to me I will never cast out.'