How do we know salvation is truly great?

Salvation is considered 'great' for several reasons. Firstly, it is authored by the Lord Jesus Christ, who is the sole architect and implementer of our redemption (Hebrews 5:9). Secondly, the wisdom of God's plan in offering salvation reveals His power to be just while justifying sinners (Romans 3:24-26). Furthermore, salvation is designated for great sinners, showcasing God's mercy and grace. Each aspect of salvation—election, calling, justification, and sanctification—are perfectly achieved by Christ, reflecting His character as powerful and eternal.