Why is free will considered idolatry in the sermon?

In the sermon, free will is labeled as idolatry because it ascribes to man the glory and power that rightfully belong to God. This concept is framed as 'will worship,' where individuals place their decisions above God's sovereign work. The assertion is that when people believe their choices or actions contribute to their salvation, they are ultimately worshiping their own will, representing a distortion of the central truth of the gospel, which is that salvation is solely the work of God by grace. This significance underscores the importance of recognizing our position as recipients of God’s mercy rather than contributors to our redemption.