What does the Bible say about redemption through Christ?

According to Revelation 5:9-10, Christ is worthy to take the book and open its seals because He was slain and has redeemed a people from every kindred and tongue. This passage emphasizes that Christ did not merely redeem everyone universally but specifically a group chosen by God. His atoning sacrifice is effective for those whom the Father has given Him, thus ensuring that they are saved and will reign with Him. The specificity of this redemption illustrates the particularity of Christ's sacrifice—He died for His elect, ensuring their salvation and the establishment of His church.

Furthermore, Acts 13:48 supports this understanding, indicating that those who were ordained to eternal life believed the gospel. This underscores that belief in the gospel is a response to the initiating work of the Sovereign God, who appoints certain individuals for salvation. Therefore, the act of redemption through Christ is both effective and particular, underscoring the sovereign grace of God in salvation and the calling of His chosen people.