The Gospel reading for the second week of Advent is about John the Baptizer, the forerunner of the Christ:
A man named John was sent from God. He came for testimony, to testify to the light, so that all might believe through him. He was not the light, but came to testify to the light. And this is the testimony of John. When the Jews from Jerusalem sent priests and Levites to him to ask him, “Who are you?” He admitted and did not deny it, but admitted, “I am not the Christ.” So they asked him, “What are you then? Are you Elijah?” And he said, “I am not.” “Are you the Prophet?” He answered, “No.” So they said to him, “Who are you, so we can give an answer to those who sent us? What do you have to say for yourself?” He said: “I am the voice of one crying out in the desert, ‘make straight the way of the Lord,’” as Isaiah the prophet said.” Some Pharisees were also sent. They asked him, “Why then do you baptize if you are not the Christ or Elijah or the Prophet?” John answered them, “I baptize with water; but there is one among you whom you do not recognize, the one who is coming after me, whose sandal strap I am not worthy to untie.” This happened in Bethany across the Jordan, where John was baptizing. (John 1:6-8, 19-28)
This passage must encourage us to prepare for the second coming of the Christ, to prepare the way for him, to make his way straight. I think the way to do this is to introduce people to Christ first through our own actions, and second, as opportunity arises, through words.