What does heartburn mean in a spiritual context?

The term 'heartburn' in a spiritual context is derived from Luke 24:32, where the disciples expressed that their hearts burned within them as Jesus explained the Scriptures. This burning sensation represents a deep, inner awakening and excitement about the truth of the gospel and a personal encounter with the Lord. It signifies a stirring of affections and conviction that draws believers closer to God and His Word. Such spiritual heartburn indicates the work of the Holy Spirit in igniting faith, revealing truths, and creating a desire for deeper understanding and communion with Christ.