This signifies the exercise of divine discipline, by which the mind that subdues the passions is cleansed and adorned by the sweeping out and ejection from it of sins. For it is necessary to come cleansed and adorned to the feast, arrayed, as by a decorator, in the discipline and exercise of virtue. For the mind being cleansed by laborious exercises from the distracting thoughts which darken it, quickly perceives the truth; as the widow in the Gospels  found the piece of money after she had swept the house and cast out the dirt, that is, the passions which obscure and cloud the mind, which increase in us from our luxuriousness and carelessness.
Whoso, therefore, desires to come to that Feast of Tabernacles, to be numbered with the saints, let him first procure the goodly fruit of faith, then palm branches, that is, attentive meditation upon and study of the Scriptures, afterwards the far-spreading and thickly-leaved branches of charity, which He commands us to take after the palm branches; most fitly calling charity dense boughs, because it is all thick and close and very fruitful, not having anything bare or empty, but all full, both branches and trunks. Such is charity, having no part void or unfruitful. For "though I sell all my goods and give to the poor, and though I yield up my body to the fire, and though I have so great faith that I can remove mountains, and have not charity, I am nothing."  Charity, therefore, is a tree the thickest and most fruitful of all, full and abounding copiously abounding in graces.
After this, what else does He will that we should take? Willow branches; by that figure indicating righteousness, because "the just," according to the prophet, shall spring up "as grass in the midst of the waters, as willows by the watercourses,"  flourishing in the word. Lastly, to crown all, it is commanded that the bough of the Agnos tree be brought to decorate the Tabernacle, because it is by its very name the tree of chastity, by which those already named are adorned. Let the wanton now be gone, who, through their love of pleasure, reject chastity. How shall they enter into the feast with Christ who have not adorned their tabernacle with boughs of chastity, that God-making and blessed tree with which all who are hastening to that assembly and nuptial banquet ought to be begirt, and to cover their loins? For come, fair virgins, consider the Scripture itself, and its commands, how the Divine word has assumed chastity to be the crown of those virtues and duties that have been mentioned, showing how becoming and desirable it is for the resurrection, and that without it no one will obtain the promises which we who profess virginity supremely cultivate and offer to the Lord. They also possess it who live chastely with their wives, and do, as it were about the trunk, yield its lowly branches bearing chastity, not being able like us to reach its lofty and mighty boughs, or even to touch them; yet they, too, offer no less truly, although in a less degree, the branches of chastity.  But those who are goaded on by their lusts, although they do not commit fornication, yet who, even in the things which are permitted with a lawful wife, through the heat of unsubdued concupiscence are excessive in embraces, how shall they celebrate the feast? how shall they rejoice, who have not adorned their tabernacle, that is their flesh, with the boughs of the Agnos, nor have listened to that which has been said, that "they that have wives be as though they had none?" 
 Leviticus 23:40.  Luke 15:8.  1 Corinthians 13:2, 3. Quoted from memory and in meaning, not verbally.--Tr.  Isaiah 44:4. The reading of the LXX.  [See Jer. Taylor, Holy Living, cap. ii. sec. 3, Works, vol. i. p. 427, ed. Bohn, 1844. This is a token of antiquity.]  1 Corinthians 7:29.
 Luke 15:8.
 1 Corinthians 13:2, 3. Quoted from memory and in meaning, not verbally.--Tr.
 Isaiah 44:4. The reading of the LXX.
 [See Jer. Taylor, Holy Living, cap. ii. sec. 3, Works, vol. i. p. 427, ed. Bohn, 1844. This is a token of antiquity.]
 1 Corinthians 7:29.