Why is God's grace compared to a never-ending supply?

In the sermon, God's grace is depicted as a never-ending river, flowing continually to enrich and sustain His people. Psalm 65:9 states, 'Thou greatly enrichest it with the river of God which is full of water,' illustrating that God's blessings do not run dry. This concept is also reinforced in Isaiah 55, where God compares His word to rain that nourishes the earth. God's grace is abundant, characterized by its unceasing and life-giving nature, providing everything His people need to thrive spiritually. The imagery of a river suggests not only the abundance but also the transformative power of God's grace, which is instrumental for spiritual growth and perseverance.