How do we know Christ's atonement is definite?

The doctrine of definite atonement, also known as limited atonement, holds that Christ died specifically for the sins of the elect, effectively securing their salvation. This is rooted in passages such as Ephesians 1:4-5, which speaks of God choosing us in Christ before the foundation of the world. The belief that Christ died for all people in general undermines the power and intent of His sacrificial death. In scripture, we see that Christ's death was purposeful and aimed at redeeming a specific group of people, highlighting His love and the certainty of their salvation. This is not only a matter of theological accuracy but also vital for understanding the nature of God's sovereignty in salvation.