Matthew 21:20

But if the Lord come seeking fruit with temptations, and one be found having nought of righteousness but only a profession of faith, which is leaves without fruit, he is soon withered, losing even his seeming faith; and every disciple makes this fig tree to wither, by making it be seen that he is void of Christ, as Peter said to Simon, Thy heart is not right in the sight of God (Acts 8:21.) For it is better that a deceitful fig tree which is thought to be alive, yet brings forth no fruit, should be withered up at the word of Christ's disciples, than that by an imposture it should steal aawy innocent hearts. Also there is in every unbeliever a mountain great in proportion to his unbelief, which is removed by the words of Christ's disciples.

(de Cons. Ev. ii. 68.) It must be considered that Mark relates the wonder of the disciples at the withering of the tree, and the answer of the Lord concerning faith, to have been not on the day following the cursing of the tree, but on the third day after; and that on the second day Mark relates the casting of the merchants out of the Temple, which he had omitted on the first day. On the second day then he says that He went forth out of the city in the evening, and that as they passed by in the morning, the disciples then saw that the fig tree was withered. But Matthew speaks as though all this had been done on the day following. This must be so taken as that when Matthew, having related that the fig tree was dried up, adds immediately, omitting all the events of the second day, And when the disciples saw if, they marvelled, he yet meant that it was on another day that they marvelled. For the tree must be supposed to have withered at the time it was cursed, not at the time they saw it. For they did not see it withering, but when it was withered, and by that they understood that it had withered immediately upon the Lord's words.