How do we know that faith is essential for understanding God's will?

Faith enables believers to grasp the perfect will of God, as highlighted in Romans 12:2, where Paul urges us to be transformed by the renewing of our minds. This transformation comes through the work of the Holy Spirit, which allows us to discern what is good and acceptable according to God's standards. Reliance on physical experiences or signs, like placing a fleece, shows a lack of faith and understanding of God's providence. Instead, true understanding flows from a heart of faith, resting in the completed work of Christ.