Mark 1:3

The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight--The second of these quotations is given by Matthew and Luke in the same connection, but they reserve the former quotation till they have occasion to return to the Baptist, after his imprisonment (Mat 11:10; Luk 7:27). (Instead of the words, "as it is written in the Prophets," there is weighty evidence in favor of the following reading: "As it is written in Isaiah the prophet." This reading is adopted by all the latest critical editors. If it be the true one, it is to be explained thus--that of the two quotations, the one from Malachi is but a later development of the great primary one in Isaiah, from which the whole prophetical matter here quoted takes its name. But the received text is quoted by IRENÆUS, before the end of the second century, and the evidence in its favor is greater in amount, if not in weight. The chief objection to it is, that if this was the true reading, it is difficult to see how the other one could have got in at all; whereas, if it be not the true reading, it is very easy to see how it found its way into the text, as it removes the startling difficulty of a prophecy beginning with the words of Malachi being ascribed to Isaiah). For the exposition, see on Mat 3:1-6, Mat 3:11.

Mark's narrative does not take rise so early as those of Matthew and Luke do, from the birth of our Saviour, but from John's baptism, from which he soon passes to Christ's public ministry. Accordingly, in this chapter, we have, I. The office of John Baptist illustrated by the prophecy of him (Mar 1:1-3), and by the history of him (Mar 1:4-8). II. Christ's baptism, and his being owned from heaven (Mar 1:9-11). III. His temptation (Mar 1:12, Mar 1:13). IV. His preaching (Mar 1:14, Mar 1:15, Mar 1:21, Mar 1:22, Mar 1:38, Mar 1:39). V. His calling disciples (Mar 1:16-20). VI. His praying (Mar 1:35). VII. His working miracles. 1. His rebuking an unclean spirit (Mar 1:23-28). 2. His curing Peter's mother-in-law, who was ill of a fever (Mar 1:29-31). 3. His healing all that came to him (Mar 1:32, Mar 1:34). 4. His cleansing a leper (Mar 1:40-45).

1:3 John the Baptist was the voice shouting in the wilderness for people to prepare the way for the Lord’s coming. In Isaiah, this prophecy refers to the coming of the Lord, the God of Israel. Here it refers to the Lord Jesus (see 12:35-37). The early church called itself “the Way,” probably in reference to this promise (see Acts 9:2; 19:9, 23; 22:4; 24:14, 22; cp. Acts 2:28; 18:25-26; Rom 2:20; 2 Pet 2:2, 21).