How Does Christ's Kingdom Grow?

Jesus used parables of scattering seeds, plants growing, and harvesting crops to describe the kingdom of God. From those parables we understand that Christ's kingdom, which is God's rule in our hearts, and the invisible church, which is made up of all believers, grow through people proclaiming the Word of God. When everyone has come to faith according to God's plan, Christ will return to "harvest" the souls of all believers. We also see that the entire world, including unbelievers, benefit from the works of the invisible church.