Oh we'd get told things like this
(Matthew 16:5-12) 5 Now the disciples crossed to the other side and forgot to take loaves along. 6 Jesus said to them: “Keep YOUR eyes open and watch out for the leaven of the Pharisees and Sadducees.” 7 So they began to reason among themselves, saying: “We did not take any loaves along.” 8 Knowing this, Jesus said: “Why are YOU doing this reasoning among yourselves, because YOU have no loaves, YOU with little faith? 9 Do YOU not yet see the point, or do YOU not remember the five loaves in the case of the five thousand and how many baskets YOU took up? 10 Or the seven loaves in the case of the four thousand and how many provision baskets YOU took up? 11 How is it YOU do not discern that I did not talk to YOU about loaves? But watch out for the leaven of the Pharisees and Sadducees.” 12 Then they grasped that he said to watch out, not for the leaven of the loaves, but for the teaching of the Pharisees and Sadducees.