Mark 4:11

4:11 He said to them, “The secret of the kingdom of God has been given to you. But to those outside, everything is in parables,

Mark 4:30

The Parable of the Mustard Seed

4:30 He also asked, “To what can we compare the kingdom of God, or what parable can we use to present it?

Mark 10:23-24

10:23 Then Jesus looked around and said to his disciples, “How hard it is for the rich to enter the kingdom of God!” 10:24 The disciples were astonished at these words. But again Jesus said to them, “Children, how hard it is to enter the kingdom of God!