What does the Bible say about the extent of Christ's atonement?

In discussing the extent of Christ's atonement, it is imperative to understand that the atoning work of Christ was purposed for a specific group of people intended by God. This concept is rooted in the covenant of redemption, where the Father chose a distinct people for the Son, who agreed to act as their surety. Thus, the death of Christ is depicted as particularly efficacious, securing true redemption, reconciliation, and propitiation for those chosen by God. Texts such as John 10:14-15, where Jesus states He lays down His life for the sheep, underscore this thing of particularism in His atoning sacrifice.