How do we know that infants are part of the Kingdom of God?

In the Gospel accounts, particularly in Luke 18:15-16, we see Jesus' acceptance of infants. When parents brought their infants to Him for blessing, He rebuked the disciples for preventing them from coming. By doing so, He declared that 'of such is the kingdom of God,' thereby asserting that infants are indeed included in His Kingdom. The act of blessing them signifies a divine favor that assures believers of God's grace being extended even to the youngest among us, affirming the belief in a gracious God who saves by His mercy, not by human merit.