Specific Text - Mark 8:14-30
It's almost like they're comic relief... you know, the guys who show up between the really intense scenes in a movie to help lighten the mood? Jesus is coming off of two miraculous feedings of 5,000 and then 4,000 men with just a few loaves and fish, and still the disciples are worried about how one loaf will satisfy their hunger.
They have no idea that the yeast Jesus refers to in v15 has nothing to do with bread. Quite the opposite, in fact. The yeast that Jesus is referring to is that selfish part of our old selves that always wants to make everything about three people: me, myself & I. Ultimately, that's what caused the crowds to throng around Jesus everywhere He went: this desire to have all of our earthly problems solved.
This inner temptation is so strong it caused the disciples to miss the obvious: God will always supply our daily bread, that is, the material things you need to do and follow His will. One of the hardest things you will ever have to do is learn to stop worrying about day to day needs. This worrying is actually a symptom of selfishness, and in this passage, Jesus compares it to yeast- something that quickly works its way through every aspect of you.
Be reminded that whatever it is that you need today will be fully provided by your faithful God and Savior.
The very next passage is about Jesus restoring sight to a blind man, and that event serves as sort of a metaphorical hinge for the gospel of Mark, because right after that, Peter's spiritual blindness is taken away, when he finally realizes what Jesus is all about, and that He is so much more than just miraculous healings and feedings. Memorize verse 29:
"But what about you?" He asked. "Who do you say that I am?" Peter answered, "You are the Christ (Messiah)."
Prayer For The Day: Dear Father in heaven, help me to learn from the mistakes of the disciples in this passage, and along with Peter may I realize that you are the Son of the Living God who has come bringing Salvation. Give me today my daily bread - the things I need to serve you today - so that I will not fall victim to the temptation of my old, selfish self. Amen.