Why do Christians glory in God according to the sermon?

The sermon articulates that the ultimate reason Christians glory in God stems from the acknowledgment that our salvation is entirely His work. As stated in 1 Corinthians 1:31, 'He that glorieth, let him glory in the Lord.' This declaration emphasizes that all facets of our salvation—election, redemption, and sanctification—are acts of God's grace. Rather than boasting in our own abilities or decisions, acknowledging God's sovereign will in our lives instills a sense of humility and dependence upon Him. Thus, our glory belongs solely to God, who deserves praise for His magnificent plan of salvation that guarantees our union with Christ and ensures our eternal standing with Him.