How do we know that God's sovereignty in salvation is true?

Scripture provides a robust foundation for understanding God's sovereignty in salvation, particularly in passages such as Ephesians 1:4-5, which states, 'Even as he chose us in him before the foundation of the world, that we should be holy and blameless before him.' This verse underscores God's initiative in salvation, emphasizing His choice before the creation of the world. Additionally, Romans 8:29-30 speaks of those whom God predestined to be conformed to the image of His Son, illustrating the comprehensive nature of His plan for salvation. Such passages convey that salvation originates from God and is entirely secure in His will, countering any notion of human autonomy in the redemptive process.