Why is believing in Christ's work important for salvation?

Faith in Christ signifies reliance on His atoning sacrifice and righteousness for our acceptance before God. John 6:53-57 illustrates the need for believers to 'eat the flesh' and 'drink the blood' of Christ, a metaphor for fully embracing His finished work for salvation. Salvation cannot be achieved by our own efforts; it is a gift made possible by Christ’s sacrifice. As believers, we must continuously look to Jesus, trusting in His righteousness and atoning work, thereby receiving spiritual life through the Holy Spirit that enables us to live in accordance with His will.