Mark 1:7

John was setting forth the anticipatory and ancillary value of his own baptism, showing that it had no other purpose than to lead to repentance. He did not say he baptized with water of forgiveness, but of repentance. He pointed toward Christ's baptism, full of inexpressible gifts. John seems to be saying: "On being told that he comes after me, you must not think lightly of him because he comes later. When you understand the power of Christ's gift, you will see that I said nothing lofty or noble when I said 'I am unworthy to untie the thong of his sandal.' When you hear, 'He is mightier than I,' do not imagine that I said this by way of comparison. For I am not worthy to be ranked so much as among Christ's servants, no, not even the lowest of his servants, nor to receive the least honored portion of his ministry." Therefore John did not simply say, "his sandals," he said "the thong of his sandals," the part counted the least of all.

Even though Elijah the Tishbite was taken up to heaven, he was not greater than John. Enoch too was translated but was not greater than John. Moses was the greatest of lawgivers and all the prophets were admirable, but none greater than John. It is not I who would dare to compare prophet with prophet, but their Master and ours who himself declared "Among those born of women there is none greater than John." Not "born of virgins," observe! but "born of women."

As a witness for simplicity in shoes let John suffice, who avowed that "he was not worthy to unloose the latchet of the Lord's shoes." For he who exhibited to the Hebrews the type of the true philosophy wore no elaborate shoes. What else this may imply, will be shown elsewhere.

I, He says, am not worthy to be even the lowest servant of His, one who would untie the strap, that is, the knot on the strap of His sandals. However, it is also understood this way: all who came and were baptized by John …

Some persons also understand it thus; all who came to John, and were baptized, through penitence were loosed from the bands of their sins by believing in Christ. John then in this way loosed the shoe-latchet of all the others, that is, the bands of sin. But Christ's shoe-latchet he was not able to unloose, because he found no sin in Him.

"He who comes after me was made before me." For it is said thus: "Made before me," as if it were said, "Placed before me." Therefore he comes after me, because he was born afterward; but he was made before me, because he was preferred to me. But saying these things a little earlier, he also opened the reasons for his preference when he added: "Because he was before me." As if he openly said: Hence he surpasses me even though born after me, because the times of his birth do not confine him. For he who is born in time through a mother was begotten without time from the Father. He shows by adding with what great reverence of humility he is indebted to him: "Whose sandal strap I am not worthy to untie." The custom among the ancients was that if someone did not wish to take as wife the one who was suited to him, he who came as bridegroom by right of kinship to her would untie his sandal. What then did Christ appear as among men, if not the bridegroom of holy Church? But because men thought John was the Christ, which the same John denies, he rightly declares himself unworthy to untie the strap of his sandal. As if he openly said: I am unable to uncover the footsteps of our Redeemer, because I do not undeservedly usurp for myself the name of bridegroom.

(Hom. in Evan. vii.) Shoes also are made from the skins of dead animals. The Lord, therefore, coming incarnate, appeared us it were with shoes on His feet, for He assumed in His divinity the dead skins of our corruption. Or else; it was a custom among the ancients, that if a man refused to take as his wife the woman whom he ought to take, he who offered himself as her husband by right of kindred took off that man's shoe. Rightly then does he proclaim himself unworthy to loose his shoe-latchet, as if he said openly, I cannot make bare the feet of the Redeemer, for I usurp not the name of the Bridegroom, a thing which is above my deserts.

And he preached, saying: One mightier than I is coming, etc. Among the ancients, it was customary that if one did not wish to take as a wife the one who corresponded to him, the one who would be closest by kinship would loose the …

(ubi sup.) Thus then John proclaims the Lord not yet as God, or the Son of God, but only as a man mightier than himself. For his ignorant hearers were not yet capable of receiving the hidden things of so great a Sacrament, that the eternal Son of God, having taken upon Him the nature of man, had been lately born into the world of a virgin; but gradually by the acknowledgment of His glorified lowliness, they were to be introduced to the belief of His Divine Eternity. To these words, however, he subjoins, as if covertly declaring that he was the true God, I baptize you with water, but he shall baptize you with the Holy Ghost. For who can doubt, that none other but God can give the grace of the Holy Ghost.

(non occ.) He said this to do away with the opinion of the crowd, who thought that he was the Christ; but he announces that Christ is mightier than he, who was to remit sins, which he himself could not do.

Who again is mightier than the grace, by which sins are washed away, which John signifies? He who seven times and seventy times seven remits sin. Grace indeed comes first, but remits sins once only by baptism, but mercy reaches to the wretched from Adam up to Christ through seventy-seven generations, and up to one hundred and forty-four thousand. (Mat. 18:22) The shoe is in the extremity of the body; for in the end the Incarnate Saviour is coming for justice, whence it is said by the prophet, Over Edom will I cast out my shoe. (Ps. 60:9)

And preached, saying, there cometh one mightier than I after me,....

He comes after me in time, but he is mightier than I, mightier than the mighty ones of the earth, for he is able to baptize with the Holy Ghost; he can give the Spirit of God, and by him govern the spirits of men. [3.] The great promise Christ makes in his gospel to those who have repented, and have had their sins forgiven them;

The Gospel of Mark, which we now begin, is in some respects unlike the other three Gospels. It tells us nothing about the birth and early life of our Lord Jesus Christ. It contains comparatively few of His sayings and discourses. Of all the four inspired histories of our Lord's earthly ministry, this is by far the shortest. But we must not allow these peculiarities to make us undervalue Mark's Gospel. It is a Gospel singularly full of precious facts about the Lord Jesus, narrated in a simple, terse, pithy, and condensed style.

The Gospel of Mark, which we now begin, is in some respects unlike the other three Gospels. It tells us nothing about the birth and early life of our Lord Jesus Christ. It contains comparatively few of His sayings and discourses. Of all the four inspired histories of our Lord's earthly ministry, this is by far the shortest. But we must not allow these peculiarities to make us undervalue Mark's Gospel. It is a Gospel singularly full of precious facts about the Lord Jesus, narrated in a simple, terse, pithy, and condensed style. If it tells us few of our Lord's SAYINGS, it is eminently rich in its catalogue of His DOINGS. It often contains minute historical detail of deep interest, which are wholly omitted in Matthew, Luke and John. In short, it is no mere abridged copy of Matthew, as some have rashly asserted, but the independent narrative of an independent witness, who was inspired to write a history of our Lord's WORKS , rather than of His WORDS . Let us read it with holy reverence. Like all the rest of Scripture, every word of Mark is "given by inspiration of God," and every word is "profitable." Let us observe, in these verses, what a full declaration we have of the dignity of our Lord Jesus Christ's person. The very first sentence speaks of Him as "the Son of God." These words, "the Son of God," conveyed far more to Jewish minds than they do to ours. They were nothing less than an assertion of our Lord's divinity. They were a declaration that Jesus was Himself very God, and "equal with God." (John 5:18.) There is a beautiful fitness in placing this truth in the very beginning of a Gospel. The divinity of Christ is the citadel and keep of Christianity. Here lies the infinite value of the atoning sacrifice He made upon the cross. Here lies the peculiar merit of His atoning death for sinners.

The latchet of whose shoes - The shoe of the ancients was properly only a sole tied round the foot and ankle with strings or thongs. See on Mat 3:11 (note).