How does God's immutable grace affect our salvation?

The concept of God's immutable grace emphasizes that His purposes and promises for salvation never change. This is a bedrock belief in Reformed theology, rooted in the understanding that God's grace is not contingent upon human actions but is sovereign and steadfast. As noted in the sermon, God's grace initiated salvation before the foundation of the world (Ephesians 1:4-5), and because it is based on His character, it assures believers of their eternal security. No matter the fluctuations in a believer's faith or the depth of their sin, God's grace remains constant, making their salvation both secure and assured, as it rests firmly in Christ's finished work.