How do we know that God gives understanding by His grace?

The assurance that God gives understanding by grace is grounded in Scripture, particularly passages that emphasize divine revelation. For instance, Proverbs 1:4 states that God gives subtlety to the simple, demonstrating His initiative in granting understanding. Additionally, moments of personal conversion reflect this grace as believers find clarity and faith through God's revelation, not through their efforts. The work of the Holy Spirit is pivotal, making the truths of Scripture known to our hearts, confirming that understanding is ultimately a gift that stems from God’s mercy and sovereign will.