Jeremiah 24:2

"I gave you," he said, "directions in the first commandment to attend to faith, and fear, and self-restraint." "Even so, sir," said I. And he said, "Now I wish to show you the powers of these, that you may know what power each possesses. For their powers are double, and have relation alike to the righteous and the unrighteous. Trust you, therefore, the righteous, but put no trust in the unrighteous. For the path of righteousness is straight, but that of unrighteousness is crooked. But walk in the straight and even way, and mind not the crooked. For the crooked path has no roads, but has many pathless places and stumbling-blocks in it, and it is rough and thorny. It is injurious to those who walk therein. But they who walk in the straight road walk evenly without stumbling, because it is neither rough nor thorny. You see, then, that it is better to walk in this road." "I wish to go by this road," said I. "You will go by it," said he; "and whoever turns to the Lord with all his heart will walk in it."

The fig tree can be taken as a type of the delights of paradise due to the sweetness and excellence of its fruit. The devil beguiled the man by imitating it and then led him captive, persuading him to conceal the nakedness of his body by fig leaves.… The enemy, by his power, always imitates the forms of virtue and righteousness, not for the purpose of truly promoting its exercise but for deception and hypocrisy. He camouflages himself with the colors of immortality in order to entice those who are fleeing from death to embrace death. And so he desires to look like a fig tree or vine and to produce sweetness and joy, and he is "transformed into an angel of light," ensnaring many by the appearance of piety.For we find in the sacred Writings that there are two kinds of fig trees and vines, "the good figs, which are very good, and the evil, which are very evil"; and "wine that makes glad the heart of people" and wine that is the poison of dragons and the incurable venom of asps. But from the time when chastity began to rule over the human race, the fraud was detected and overcome, with Christ, the chief of virgins, overturning it. So both the true fig tree and the true vine yield fruit after that the power of chastity has laid hold on all, as Joel the prophet preaches, saying, "Do not be afraid, O land. Be glad and rejoice, for the Lord will do great things. Do not be afraid, beasts of the field, for the pastures of the wilderness are springing into life, for the tree bears its fruit, the fig tree and the vine yield their strength. Be glad then, children of Zion, and rejoice in the Lord your God, for he has given you food for righteousness." He calls the former laws the vine and the fig, trees bearing fruit for righteousness for the children of the spiritual Zion that bore fruit after the incarnation of the Word, when chastity ruled over us, when formerly, because of sin and much error, they had checked and destroyed their buds. For the true vine and the true fig tree were not able to yield such nourishment to us as would be profitable for life while as yet the false fig tree, variously adorned for the purpose of fraud, flourished. But when the Lord dried up the false branches—imitations of the true branches—uttering the sentence against the bitter fig tree, "Let no fruit grow on you henceforward forever," then those that were truly fruit-bearing trees…