And you, child, will be called the prophet of the Most High;
for you will go before the Lord to prepare his ways,
to give knowledge of salvation to his people
in the forgiveness of their sins ~Luke 1:76-77
John the Baptist was born for the special task of making straight the desert highway, to proclaim that the kingdom of heaven was at hand, that is to say, that Jesus Christ was coming into the world to bring light into the darkness. He was given the Holy Spirit that he that he might glorify God with his life and actions and make known that great light and hope.
We are also endued with the Holy Spirit, that the light of Christ in us and our actions might be ever shining witnesses to the glory of God. Of course, this is no easy thing, and the darkness often rebels strongly against the light, but we are to walk in the light as we know the light, that is Jesus Christ our Lord.
We are called to give witness to the Lord, to give knowledge in His ways. It may be through the ministry of raising Godly children, or as a preacher, or as simply being a good neighbor, but whatever we do, may it always be to the glory of the Lord.