Acts 2:42 - "And they devoted themselves to the apostles' teaching and fellowship, to the breaking of bread and the prayers."

I believe in God, the Father Almighty, Creator of heaven and earth. I believe in Jesus Christ, His only Son, Our Lord. He was conceived by the power of the Holy Spirit and born of the Virgin Mary. He suffered under Pontius Pilate, was crucified, died, and was buried. He descended into hell. On the third day He rose again. He ascended into heaven and is seated at the right hand of the Father. He will come again to judge the living and the dead. I believe in the Holy Spirit, the holy Catholic Church, the communion of saints, the forgiveness of sins, the resurrection of the body, and life everlasting. Amen.

Before Christ ascended to His Father after His Resurrection, He gave the apostles a final command:

(Matthew 28:18-20) - Then Jesus came to them [the apostles] and said, "All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age."

"He thus entrusted them with the mission and power to proclaim to humanity what they had heard, what they had seen with their eyes, what they had looked upon and touched with their hands, concerning the Word of Life (John 1:14). He also entrusted them with the mission and power to explain with authority what He had taught them, His words and actions, His signs and commandments. And He gave them the Spirit to fulfill this mission.

"The Apostles' Creed originated between 180 A.D. and 200 A.D. It appears that originally this Creed was a Roman baptismal creed summarizing the teachings of the Apostles and was given to the catechumens (ones who are being taught the principles of Christianity) when they were baptized. Instead of the continuous prayer as we have it today, each line was a set of questions to which the catechumen gave assent indicating he both understood and believed."  --from True Path

We believe in one God, the Father, the Almighty, Maker of heaven and earth, of all that is seen and unseen.
We believe in one Lord, Jesus Christ, the only Son of God eternally begotten of the Father, God from God, Light from Light, true God from true God, begotten, not made, one in Being with the Father. Through Him all things were made. For us men and for our salvation He came down from heaven: by the power of the Holy Spirit He was born of the Virgin Mary, and became man. For our sake He was crucified under Pontius Pilate; He suffered, died, and was buried. On the third day He rose again in fulfillment of the Scriptures; He ascended into heaven and is seated at the right hand of the Father. He will come again in glory to judge the living and the dead, and His kingdom will have no end.
We believe in the Holy Spirit, the Lord, the Giver of life, who proceeds from the Father and the Son. With the Father and the Son He is worshipped and glorified. He has spoken through the Prophets. We believe in one holy Catholic and Apostolic Church. We acknowledge one baptism for the forgiveness of sins. We look for the resurrection of the dead, and the life of the world to come. Amen.

"The Nicene Creed (Creed of Nicaea-Constantinople) consists of elements of doctrine contained in an early Baptismal Creed of Jerusalem and enactments of the Council of Nicaea (325 A.D.) and the Council of Constantinople (381 A.D.)." --from True Path