How do we know God is sovereign over our salvation?

The Reformed understanding of salvation emphasizes God's sovereignty over every aspect of salvation, often encapsulated in the acronym TULIP. Scriptures such as Ephesians 1:4-5 declare that God chose His people in Christ before the foundation of the world, demonstrating His active role in predestination. Additionally, Romans 8:28-30 outlines the golden chain of salvation, emphasizing that those whom God predestined, He also called, justified, and glorified, underlining His ultimate authority over the entire process. This sovereignty assures believers that their salvation is secure because it is God who holds the power to sustain it, as noted in Philippians 1:6, which promises that He who began a good work in you will carry it on to completion.