5 When the disciples arrived on the other side of the lake, they had forgotten to bring bread. 6 Jesus said to them, “Watch out and be on your guard for the yeast of the Pharisees and Sadducees.” 7 They discussed this among themselves and said, “We didn’t bring any bread.” 8 Jesus knew what they were discussing and said, “You people of weak faith! Why are you discussing among yourselves the fact that you don’t have any bread? 9 Don’t you understand yet? Don’t you remember the five loaves that fed the five thousand and how many baskets of leftovers you gathered? 10 And the seven loaves that fed the four thousand and how many large baskets of leftovers you gathered? 11 Don’t you know that I wasn’t talking about bread? But be on your guard for the yeast of the Pharisees and Sadducees.” 12 Then they understood that he wasn’t telling them to be on their guard for yeast used in making bread. No, he was telling them to watch out for the teaching of the Pharisees and Sadducees. (Matthew 16:5-12, CEB)
A little bit of yeast leavens the whole batch. It only takes a little bit of yeast to make the whole batch have yeast. It infiltrates and gets into everything.
So when the bad teaching comes in, it takes over the whole batch.
This is why we have to guard our hearts and watch our for the bad yeast so it doesn’t take over everything.
Be on your guard for bad yeast
Love People. Love God.