1 Samuel 20:42

Then Jonathan said to David: Go in peace, etc. However, the Lord rose from the midst of the unbelieving Synagogue, saying: Jerusalem, Jerusalem, you who kill the prophets and stone those who are sent to you, how often I have wanted to gather your children together, as a hen gathers her chicks under her wings, but you were not willing? Behold, your house is left to you desolate (Matthew 23); and He went to seek a Church for Himself from the Gentiles. But even the more perfect returned to the teachers in the primitive Church from the consideration of the aforementioned right hand of the Most High, to complete the new peaks of the city descending from God out of heaven. If the city, as seen above, is pleasing to be understood as the fortification of prophetic reading, from which it is said: And we have the more sure prophetic word, to which you do well to attend, as to a light that shines in a dark place, until the day dawns, and the day star arises in your hearts (2 Peter 1); and it is very pleasing for the afflicted and sorrowful to enter this, so that under its protection each one may either more secretly indulge in tears or more wisely wipe away the tears.

And when the boy had gone, David arose from his place, etc. When the disciples, obeying the command of their elders, went to compile the events of their times according to the writings of their predecessors, the grace of Christ appeared more abundantly, shining forth from the virtues of the saints, those, of course, who kept their hearts open to receive the gifts of the most fervent charity given by the Holy Spirit with humble submission. For this is the most splendid diversity of the growing Church, which the forty-fourth Psalm sings, so that some manifest Christ's presence in themselves by shining with miracles; others, still intent on sacred writings, consider how the old and new harmonize with each other; others perform various services of the same faith; and still others embody what the following words signify, that divine love suddenly coming to earthly hearts provokes them with diligent contrition to adore more fervently the glory of the Holy Trinity; which our strong and desirable Lord Himself is said to do when He kindles His saints inwardly to act. As it is also said about the Holy Spirit: "The Spirit helps our infirmities (for we do not know how to pray as we ought), but the Spirit Himself intercedes for us with unspeakable groanings" (Romans VIII); that is, He causes; this figure of speech is very common in sacred Scriptures, called "metonymy" by grammarians in Greek, that is, transnaming, while through the efficient the effect is intended to be understood. Just like the lawgiver's words: "The Lord your God tests you to know whether you love Him or not" (Deut. XIII); that is, to make it known. And they kissed each other and wept. Not in vain; for the more mutual love, which inward virtue nourished, sweetly incited those very holy youths to embraces and kisses, the more the everlasting separation, which they now saw impending for them, provoked them more sharply to tears and lamentations. But in the typological sense, it must be said that our Lord bestowed His holy gifts of His mouth on those believing in Him from among the Jews; for the non-believers and those expelling Him by persecution, He did not refuse to weep, saying: "If you too had known." For David and Jonathan kissing each other signifies the Lord bestowing to the Church the salutary gifts of His word, and the Church responding devoutly to the Lord with the same word's confession or…