Matthew 11:7 As they went away, Jesus began to speak to the crowds concerning John: “What did you go out into the wilderness to see? A reed shaken by the wind? What then did you go out to see? A man dressed in soft clothing? Behold, those who wear soft clothing are in kings’ houses. What then did you go out to see? A prophet? Yes, I tell you, and more than a prophet. This is he of whom it is written, “‘Behold, I send my messenger before your face, who will prepare your way before you.’ Truly, I say to you, among those born of women there has arisen no one greater than John the Baptist. Yet the one who is least in the kingdom of heaven is greater than he.
Mark 9:11-13 And they asked him, “Why do the scribes say that first Elijah must come?” And he said to them, “Elijah does come first to restore all things. And how is it written of the Son of Man that he should suffer many things and be treated with contempt? But I tell you that Elijah has come, and they did to him whatever they pleased, as it is written of him.”
Luke 1:15-17 for he will be great before the Lord. And he must not drink wine or strong drink, and he will be filled with the Holy Spirit, even from his mother’s womb. And he will turn many of the children of Israel to the Lord their God, and he will go before him in the spirit and power of Elijah, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just, to make ready for the Lord a people prepared.”
Isaiah 40:3 A voice of one calling: “In the wilderness prepare the way for the Lord; make straight in the desert a highway for our God.
Malachi 3:1 “I will send my messenger, who will prepare the way before me. Then suddenly the Lord you are seeking will come to his temple; the messenger of the covenant, whom you desire, will come,” says the Lord Almighty
“John had often borne witness to Jesus; now Jesus bears witness of John.” John was a servant, prophet of God, a special messenger, and yet, He was considered the greatest under the Old Covenant but second even to the least in the kingdom of God under the New Covenant. “As we may say, as a rule, that the darkest day is lighter than the brightest night; so John, though first of his own order, is behind the last of the new or Gospel order. The least in the Gospel stands on higher ground than the greatest under the law.” (Spurgeon)
I must say I do not fully understand this. The Old Covenant Law pointed to the need of cleansing from sin, and by faith people trusted in what God said about sacrifices for cleansing of their sin. It was not the act of the sacrifice but rather by faith trusting in what God said. There is a big difference in trusting the act (sacrifices) and trusting in God. One says I am clean of sin because of the sacrifice I do, and the other says I am clean of sin only because of God’s grace and mercy allowed through a sacrifice.
The New Covenant proclaims the Good News of Jesus Christ, the sacrificial lamb for the forgiveness of sin. One sacrifice for all of a persons sin. Where the Law pointed to the need for cleansing and a continual sacrifice for sin, the New Covenant, the Gospel of Jesus Christ, proclaims one sacrifice for all sin. Both the Old and New Covenant required Faith in what God said and not what man does or thinks is right.
“For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him. Whoever believes in him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the only Son of God.” The Old Covenant points to the need of a new birth and the New Covenant provides it.