|| Matthew 16:5-12
MK8:14 Now the disciples had forgotten to bring enough bread and only had one loaf with them in the boat. MK8:15 It was then Jesus warned them, saying: “Keep looking and be on guard against the leaven of the Pharisees, as well as the leaven of Herod.” MK8:16 So they reasoned among themselves: “Does he say this because we did not bring bread?” MK8:17 Jesus was aware of this, so he said to them: “Why do you discuss this among yourselves? Do you not see or understand? Are you so dull of understanding? MK8:18 ‘Eyes you have but do not see, ears and do not hear?’ [Jeremiah 5:21] MK8:19 When I continued to break the five loaves among the five thousand, how many baskets of leftovers did you gather?” They said: “Twelve.” MK8:20 “And also with the seven loaves among the four thousand, how many baskets of leftovers did you gather?” And they responded: “Seven.” MK8:21 “Why do you still not understand?”
 Matthew 16:5-12: For details see notes in Nazarene Commentary 2000 on Matthew.
 Only had one loaf with them in the boat: Again the apostles worry about what they will eat in the future after they have eaten the one loaf.
 Leaven of the Pharisees: Elsewhere Jesus explains this to be the “teachings” or “doctrine” of the Pharisees. Some of these same doctrines are found in modern churches and sects, indicating that not all have listened to this warning. For details see Pharisees or leaven in the footnote commentary on Matthew. Religious doctrine.
 Leaven of Herod: Compare notes on Matthew 16:6 and Luke 12:1. Political doctrine.
 Dull of understanding: Jesus is not easy on his apostles and speaks his mind whether this hurts their feelings or not.
 Still not understand: In modern times millions of materialistic Christians have never learned this lesson stated at Matthew 6:29-34. The Church has become one of the most materialistic bodies on earth.