How do we know God's kingdom will grow?

The growth of God's kingdom is assured by His sovereign will and the effectiveness of His Word. In Mark 4:32, the parable of the mustard seed signifies that just as the mustard seed, though small, grows into a great tree, so too will God's kingdom grow and flourish despite its humble beginnings. This growth is not contingent upon human effort but rather is orchestrated by the Lord Himself. The contrast between the seemingly small faith of individuals and the expansive reach of the kingdom serves as a reminder of God's ability to work through the insignificant to accomplish His grand purposes, showcasing His faithfulness and omnipotence throughout history.