John Calvin on Matthew 21:19-20

19 Let no fruit grow on thee henceforth. Let us learn from this what is the meaning of the word curse, namely, that the tree should be condemned to barrenness; as, on the other hand, God blesses, when by his voice he bestows fertility. It appears more clearly from Mark, that the fig-tree did not instantly wither, or, at least, that it was not observed by his disciples, until they saw it next day stripped of leaves. Mark, too, attributes to Peter what Matthew attributes equally to all the disciples; but as Christ replies in the plural number, it may naturally be inferred that one put the question in the name of all.