What does the Bible say about Christ's atonement?

The biblical understanding of Christ's atonement centers on the belief that His death and resurrection were intended specifically for God's elect, those given to Him in the eternal covenant of grace. This is articulated in passages such as John 10:15-29, which reassures that all for whom Christ died shall never perish, highlighting the certainty and security of salvation for believers. Furthermore, this doctrine affirms the particularity of Christ's sacrificial work, emphasizing that His blood was shed for His people, thereby securing their redemption and eternal life, ensuring that none can take them away from His hand.