Why do some people respond to the gospel and others do not?

The differing responses to the gospel message can be understood through the lens of sovereign grace. Not every person who hears the gospel will respond positively; some will reject it due to their natural state of unbelief. The preacher notes that the Holy Spirit plays an essential role in the new birth, enabling individuals to embrace the truth of Christ. This is referred to as the 'effectual call,' which is a distinct work of the Spirit that cannot be resisted. As seen in Romans 9:16, it is not based on human will or exertion, but on God who shows mercy. Hence, the proclamation of the gospel is essential, but it is God alone who gives the increase.