This is the Great Commission. God wanted us to reach out to the lost. He wanted us to help the people to learn of Him, believe in Him, and obey His words. This is one of His greatest commandments to inherit His Kingdom.
It is indeed a challenge for us, especially this year. Go out and train everyone you meet, far and near, in this way of life, marking them by baptism in the threefold name: Father, Son, and Holy Spirit. Train them on how to become children of God. Make disciples. Be a blessing!