Matthew 16:3; Matthew 21:21

Matthew 16:3

3 "And in the morning, 'There will be a storm today, for the sky is red and threatening.' Do you know how to discern the appearance of the sky, but cannot discern the signs of the times?

Matthew 21:21

21 And Jesus answered and said to them, "Truly I say to you, if you have faith and do not doubt, you will not only do what was done to the fig tree, but even if you say to this mountain, 'Be taken up and cast into the sea,' it will happen.