Fig trees are for making figs.
Pretty simple, really. We plant apple trees because we want apples, peach trees because we want peaches, orange trees because we want oranges, and fig trees because we want figs. We might as well ask what good is an apple tree that doesn't produce apples? You might as well cut it down. Or curse it, as Jesus did the fig tree (Matthew 21:18-19).
How did Jesus know the fig tree was barren? Because the leaves and the fruit typically appear at about the same time. To see a fig tree covered with leaves but with no fruit meant that it was barren.
Three insights will help us understand this story. First, in the Old Testament the fig tree often stood as a symbol for the nation of Israel (Jeremiah 8:13; Hosea 9:10). Second, we also need to observe that the cursing of the fig tree occurs on Monday of Jesus's Passion Week, four days before his crucifixion. Third, this story is placed next to the story of Jesus cleansing the temple in Jerusalem (Matthew 21:12-17). The money lenders had turned the Lord's house into a den of thieves. They were profiteers who exchanged foreign currency and also sold the animals that worshipers from distant towns would buy to sacrifice before the Lord. By shrewd marketing they could charge exorbitant rates and make a killing off the pilgrims who came to worship. The whole scene angered our Lord because he knew that the temple should be a house of prayer for all nations.
Cursing the fig tree was Jesus's way of saying that the whole nation had become spiritually barren before the Lord. They had the form of religion but not the reality. They knew the right words to say, but their hearts were far from God.
Excerpted from "How Did The Fig Tree Wither So Quickly?" by Keep Believing Ministries (used by permission).