Treasure and Pearl
The kingdom of heaven is like unto treasure hid in a field; the which when a man hath found, he hideth, and for joy thereof goeth and selleth all that he hath, and buyeth that field. 45. Again, the kingdom of heaven is like unto a merchantman, seeking goodly pearls: 46. Who, when he had found one pearl of great price, went and sold all that he had, and bought it.'--MATT. xiii. 44-46. In this couple of parables, which are twins, and must be taken together, our Lord utilises two very familiar facts …
Alexander Maclaren—Expositions of Holy Scripture

On the Words of the Gospel, Matt. xiii. 19, Etc. , Where the Lord Jesus Explaineth the Parables of the Sower.
1. Both yesterday and to-day ye have heard the parables of the sower, in the words of our Lord Jesus Christ. Do ye who were present yesterday, recollect to-day. Yesterday we read of that sower, who when he scattered seed, "some fell by the way side," [2507] which the birds picked up; "some in stony places," which dried up from the heat; "some among thorns, which were choked," and could not bring forth fruit; and "other some into good ground, and it brought forth fruit, a hundred, sixty, thirty fold." …
Saint Augustine—sermons on selected lessons of the new testament

On the Words of the Gospel, Matt. xiii. 52, "Therefore Every Scribe who Hath Been Made a Disciple to the Kingdom of Heaven," Etc.
1. The lesson of the Gospel reminds me to seek out, and to explain to you, Beloved, as the Lord shall give me power, who is "that Scribe instructed in the kingdom of God, who is "like unto an householder bringing out of his treasure things new and old." [2524] For here the lesson ended. "What are the new and old things of an instructed Scribe?" Now it is well known who they were, whom the ancients, after the custom of our Scriptures, called Scribes, those, namely, who professed the knowledge of the …
Saint Augustine—sermons on selected lessons of the new testament