Read this passage and open each verse for the full verse feed and commentary tools.
19Seeing a fig tree by the road, he came to it, and found nothing on it but leaves. He said to it, "Let there be no fruit from you forever!" Immediately the fig tree withered away. 20When the disciples saw it, they marveled, saying, "How did the fig tree immediately wither away?" 21Jesus answered them, "Most assuredly I tell you, if you have faith, and don`t doubt, you will not only do what is done to the fig tree, but even if you will tell this mountain, `Be taken up and cast into the sea,` it will be done. 22All things, whatever you will ask in prayer, believing, you will receive."
Matthew 21:19-22 (WEB)