How do we know that God will accomplish His purpose?

God's sovereignty ensures that His purposes will be fulfilled without fail. The assurance that His word will not return to Him void is a cornerstone of our faith. As described in Isaiah 55:11, God's word always accomplishes what He intends. This means that even in a world where weeds and tares exist among the good plants, God's ultimate outcome is secure. He, as the master gardener, will separate the fruitful from the unfruitful at the proper time, fulfilling His eternal purpose of grace towards His elect. Thus, we can trust in His perfect plan and sovereign oversight over all creation.