John the Baptist, the Forerunner of Christ
Mal 3:1 Behold, I will send my messenger, and he shall prepare the way before me: and the Lord, whom ye seek, shall suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he shall come, saith the LORD of hosts.
2 But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner’s fire, and like fullers’ soap:
3 And he shall sit as a refiner and purifier of silver: and he shall purify the sons of Levi, and purge them as gold and silver, that they may offer unto the LORD an offering in righteousness.
4 Then shall the offering of Judah and Jerusalem be pleasant unto the LORD, as in the days of old, and as in former years.
5 And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the stranger from his right, and fear not me, saith the LORD of hosts.
6 For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.

Intro: John the Baptist, the Forerunner of Jesus Christ

I. The Old Testament Prophecy
Mal 3:1 Behold, I will send my messenger, and he shall prepare the way before me: and the Lord, whom ye seek, shall suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he shall come, saith the LORD of hosts.
2 But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner’s fire, and like fullers’ soap:
3 And he shall sit as a refiner and purifier of silver: and he shall purify the sons of Levi, and purge them as gold and silver, that they may offer unto the LORD an offering in righteousness.

II. Announcement by the angel of the Lord
Luke 1:7 And they had no child, because that Elisabeth was barren, and they both were now well stricken in years.
8 And it came to pass, that while he executed the priest’s office before God in the order of his course,
9 According to the custom of the priest’s office, his lot was to burn incense when he went into the temple of the Lord.
10 And the whole multitude of the people were praying without at the time of incense.
11 And there appeared unto him an angel of the Lord standing on the right side of the altar of incense.
12 And when Zacharias saw him, he was troubled, and fear fell upon him.
13 But the angel said unto him, Fear not, Zacharias: for thy prayer is heard; and thy wife Elisabeth shall bear thee a son, and thou shalt call his name John.
14 And thou shalt have joy and gladness; and many shall rejoice at his birth.

III. He baptized Jesus
Mark 1:6 And John was clothed with camel’s hair, and with a girdle of a skin about his loins; and he did eat locusts and wild honey;
7 And preached, saying, There cometh one mightier than I after me, the latchet of whose shoes I am not worthy to stoop down and unloose.
8 I indeed have baptized you with water: but he shall baptize you with the Holy Ghost.
9 And it came to pass in those days, that Jesus came from Nazareth of Galilee, and was baptized of John in Jordan.
10 And straightway coming up out of the water, he saw the heavens opened, and the Spirit like a dove descending upon him:
11 And there came a voice from heaven, saying, Thou art my beloved Son, in whom I am well pleased.

IV. Jesus’ declaration of John
Luke 7:26 But what went ye out for to see? A prophet? Yea, I say unto you, and much more than a prophet.
27 This is he, of whom it is written, Behold, I send my messenger before thy face, which shall prepare thy way before thee.
28 For I say unto you, Among those that are born of women there is not a greater prophet than John the Baptist: but he that is least in the kingdom of God is greater than he.
29 And all the people that heard him, and the publicans, justified God, being baptized with the baptism of John.

V. John’s faith was shaken in prison, doubts came
Matt 11:2 Now when John had heard in the prison the works of Christ, he sent two of his disciples,
3 And said unto him, Art thou he that should come, or do we look for another?
4 Jesus answered and said unto them, Go and shew John again those things which ye do hear and see:
5 The blind receive their sight, and the lame walk, the lepers are cleansed, and the deaf hear, the dead are raised up, and the poor have the gospel preached to them.
6 And blessed is he, whosoever shall not be offended in me.

Conclusion:
Wonderful, miraculous birth of John the Baptist
Luke 1:67 And his father Zacharias was filled with the Holy Ghost, and prophesied, saying,
68 Blessed be the Lord God of Israel; for he hath visited and redeemed his people,
69 And hath raised up an horn of salvation for us in the house of his servant David;
70 As he spake by the mouth of his holy prophets, which have been since the world began: