How do we know Jesus Christ is sufficient for salvation?

The sufficiency of Christ for salvation is rooted in the revelation of Scripture, which asserts that He contains all fullness and meets every requirement of God's justice for sinners. In 1 Corinthians 1:30, it states that 'of him are ye in Christ Jesus, who of God is made unto us wisdom, righteousness, sanctification, and redemption.' This means that believers have no need for additional works or rituals to achieve salvation, as all that is necessary for redemption is fully provided in Him. Theologically, this affirms the doctrines of grace, emphasizing that salvation is by grace alone, through faith alone, in Christ alone, independent of human merit.