Song of Solomon 2:8

But first understand that before he appeared to the eyes of the bride, the groom had been recognized by her by his voice alone, but afterwards he appeared to her sight, leaping on top of certain mountains near that place in which the bride tarried, and passing over the hills and mountains not so much in steps as much as in some big leaps like a stag or a roe and coming with all haste to his bride.But when he came to the house where his bride stayed, note that he stood behind the house for a little while so that he would indeed be perceived to be present but nonetheless not yet willing to enter the house openly and plainly, but first wished to look at the bride through the windows in the guise of love, as it were.
But note that certain nets and traps had been placed near the bride’s home so as to capture her or another of her companions from the daughters of Jerusalem, if by chance they should have ever left. The groom came to those nets, confident that he would not be captured by them, but having been made stronger than them, he tore those nets asunder, and once he had torn them, he walked on top of them and even looked through them; and after he had done this task, he said to the bride, “Arise, come, my neighbor, my bride, my dove.”
But he says this to show to her by that very act how she, with faith in him, ought to despise now the nets that her enemy had stretched out against her, and not to fear the snare, that she now sees have been torn asunder by her groom. Furthermore, in order that he may call the bride forth to hasten to him, he says to her that now all the time that seemed dire has passed away and the winter, which seemed to have arisen as her excuse, has departed and the useless rains have gone away and now the time of flowers has come.…
Therefore, if we also wish to see the Word of God and the groom of the soul as he leaps over mountains and jumps over hills, let us first hear his voice and, when we have heard him in all matters, then we will be able to see him according to thoese things which the bride is said to have seen in this present passage. For although she herself also saw him earlier, she nonetheless did not see him as now, leaping over the mountains and jumping over the hills, nor even leaning through her windows or looking through the nets, but rather it seems that she had seen him earlier in the time of winter.…
For if you were to consider how in a the space of a brief amount of time the Word of God has run throughout the world that had been seized by false superstitions and called the world back to knowledge of the true faith, you will understand how “he leaps over the mountains”—namely, he overpowered all the great kingdoms by his leaps and he inclined them to accept knowledge of divine religion—and how “he jumps over the hills”—since he quickly subdues lesser kingdoms and leads them to the piety of true worship.

The mountains are patriarchs, vast with holiness, robust in faith, founded upon a mass of charity, but the hills are prophets, established for seeing. He is said therefore to be raised higher than every mountain, or patriarch, and to leap over every hill, or prophet, because he is Lord over all, with all things being put under his feet.

The voice of the bridegroom was heard when God spoke through the prophets. After the voice the Word came leaping over the mountains that stood in his way, and by bounding over the hills, he made every rebellious power subject to himself, both the inferior powers and those that are greater. The distinction between mountains and hills signifies that both the superior adversary and the inferior one are trampled and destroyed by the same power and authority. The lion and the dragon, superior beasts, are trampled; so too are the serpent and the scorpion, which are inferior.

For at first, impatient of love and unable to bear the delays of the Word, she prays to be worthy of kisses, and she deserved to see the desired. Secondly, when she was also introduced into the king's chambers and engaged in mutual conversation, she rested in his shadow, and suddenly the Word departed from the midst of their conversation; however, it was not absent for long, but came forth leaping over the mountains and bounding over the hills. And not long after, like a young deer or a fawn, while addressing his beloved, he leaped forth and departed.

Let us follow Christ in the mountains since our brother like a gazelle or a young stag came leaping over the hills, springing across the mountains. In truth, Christ after the resurrection did not ascend into heaven from the valley but from the mountain. Unless we are mountains of virtue, we cannot ascend into heaven.

“Behold, he comes leaping upon the mountains and jumping across the hills.” … Some things imply that the bridegroom is already present, whereas other things suggest that the bridegroom is being sought by the bride. For we too investigate some problems for which we do not know the solution and some problems, when the bridegroom and Word enlightens our hearts, which we find already solved. Then, in other matters, we doubt again and it is revealed to us anew. This will happen often until we possess the bridegroom fully, when he not only comes to us but also remains within us.… “He comes leaping upon the mountains.” He also comes trampling upon the nets cast by the evil demon, breaking them that we too might trample on them contemptuously.

Hence in the voice of this same Church it is said through Solomon, "Behold, he comes leaping upon the mountains and bounding over the hills." For she considered the heights of such great works and said, "Behold, he comes leaping upon the mountains." For in coming for our redemption, He made certain leaps, so to speak. Do you wish, dearest brothers, to recognize His very leaps? From heaven He came into the womb, from the womb He came into the manger, from the manger He came to the cross, from the cross He came into the tomb, from the tomb He returned to heaven. Behold, so that He might make us run after Him, the Truth made manifest through the flesh made certain leaps for us, because "He rejoiced as a giant to run His course," so that we might say to Him from the heart, "Draw us after You; we will run in the fragrance of Your ointments."

Behold, he comes leaping upon the mountains, etc. He calls those mountains and hills who, with singular purity of mind, transcend the common conduct of the holy Church, almost like the blooming plain of the fields, and the more they render themselves lighter from the desire of the lowly, the more capable of contemplating the heavenly they become. Of whom Isaiah, when describing the coming in the flesh of the Mediator of God and men, said: "And in the last days, the mountain of the house of the Lord shall be prepared on the top of the mountains, and shall be exalted above the hills" (Isaiah II). For rightly that mountain is said to be on the top of the mountains, and to be exalted above the hills, that is, it is remembered as being higher than the high men, because, indeed, in the last days, a man appeared among men, but He existed as God with the Father before the ages. But coming upon these mountains, the Beloved is said to leap, to pass over these hills, because the Lord frequently illuminates the hearts of the sublime with the grace of His visitation. And it is beautifully said that he does not remain on these hills, but leaps or passes over them, because the sweetness of internal contemplation, as high as it is due to the recognition of heavenly things, is equally brief and rare, due to the heaviness of minds still held down by the mass of the flesh. For the corruptible body weighs down the soul, and the earthly habitation depresses the mind that thinks on many things (Wisdom IX). Nor should it be thought contrary to this sentiment, that the Beloved Himself also promises His spouse in the Gospel, saying: "Behold, I am with you all days, even to the consummation of the world" (Matthew XXVIII). And again, "If anyone loves me, he will keep my word, and my Father will love him, and we will come to him, and make our abode with him" (John XIV). For He always remains, through His faith and love, and through the assistance of His grace, with all the saints; but more excellently, for a short time, He appears to a few of the more sublime, to whom He wills and when He wills: for it is the saying of a few, and of those who, due to the loftiness of their hearts, are compared to mountains and hills, "For whether we are beside ourselves, it is to God; or whether we are sober, it is for your cause" (II Corinthians V). But it is said to all the faithful, "Whoever shall confess that Jesus is the Son of God, God dwells in him, and he in God" (I John IV). It is for the entire Church to hear with a faithful heart, "Because God is love; and he that dwells in love, dwells in God, and God in him." It is only for the perfect to say, "For we have not followed cunningly devised fables, when we made known to you the power and coming of our Lord Jesus Christ, but we were eyewitnesses of His majesty" (II Peter I). An evident example of this contemplation is further added, when it is said,

The voice of my beloved: that is, the preaching of the gospel surmounting difficulties figuratively here expressed by mountains and little hills.