Matthew 16:2

Catholic Public Domain Version

But he responded by saying to them: "When evening arrives, you say, 'It will be calm, for the sky is red,'

Cross References

Matthew 16:3

and in the morning, 'Today there will be a storm, for the sky is red and gloomy.' So then, you know how to judge the appearance of the sky, but you are unable to know the signs of the times?