Matthew 16
The Pharisees and Sadducees demand a sign from heaven; Jesus refuses, offering only the sign of Jonah, and warns the disciples to beware of their leaven — the corrupting teaching that can spread invisibly. At Caesarea Philippi, the northernmost boundary of the ministry, Jesus asks the disciples who people say he is, then who they say he is. Peter's confession — you are the Messiah, the Son of the living God — receives the response that flesh and blood did not reveal this but the Father in heaven, and the promise that on this rock Jesus will build his church and the gates of Hades will not prevail against it. Immediately following the church-founding declaration, Jesus begins teaching that the Son of Man must suffer, be killed, and rise on the third day — the first of the three passion predictions. Peter rebukes Jesus and receives the sharpest response in the Gospel: get behind me, Satan. The chapter closes with the discipleship paradox: those who want to save their life will lose it; those who lose their life for Jesus' sake will find it.
Matthew 16:2
He answered them: when it is evening, you say, it will be fair weather, for the sky is red. Jesus' response uses the weather-reading capacity of the sign-seekers against them: they can read the sky's signs but not the signs of the times. The irony is sharp: the people who are demanding a sign from heaven already know how to read signs from heaven when the stakes are merely meteorological.
Matthew 16:1
And the Pharisees and Sadducees came, and to test him they asked him to show them a sign from heaven. The joint approach of Pharisees and Sadducees — normally opponents — communicates the unified nature of the religious establishment's opposition to Jesus. The sign from heaven request parallels the sign request of Matthew 12:38, and Jesus' response will be similar: the only sign is the sign of Jonah.
Matthew 16:3
And in the morning, it will be stormy today, for the sky is red and threatening. You know how to interpret the appearance of the sky, but you cannot interpret the signs of the times. The signs of the times — the healings, the exorcisms, the teaching, the feeding miracles — are the evidence of the kingdom's arrival. Those who can read the sky's colors to predict the weather cannot read the evidence of the kingdom's presence. The selective blindness is the judgment on those who interpret the visible world with skill but refuse to interpret the spiritual world.
Matthew 16:4
An evil and adulterous generation seeks for a sign, but no sign will be given to it except the sign of Jonah. So he left them and departed. The sign of Jonah — the resurrection — is the only sign that will be given to the sign-seeking generation. The departure communicates the finality of Jesus' refusal: there is no point in remaining with those who have already determined to reject what they have seen. The evil and adulterous generation that seeks a sign will receive the ultimate sign and still reject it (Matthew 28:11–15).