From the Heidelberg Catechism:
Question 22. What is then necessary for a christian to believe?
Answer: All things promised us in the gospel, (a) which the articles of our catholic undoubted christian faith briefly teach us.
(a) John 20:31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name. Matt.28:19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: Mark 1:15 And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel.
Question 23. What are these articles?
Answer: 1. I believe in God the Father, Almighty, Maker of heaven and earth: 2. And in Jesus Christ, his only begotten Son, our Lord: 3. Who was conceived by the Holy Ghost, born of the Virgin Mary: 4. Suffered under Pontius Pilate; was crucified, dead, and buried: He descended into hell: 5. The third day he rose again from the dead: 6. He ascended into heaven, and sitteth at the right hand of God the Father Almighty: 7. From thence he shall come to judge the quick and the dead: 8. I believe in the Holy Ghost: 9. I believe a holy catholic church: the communion of saints: 10. The forgiveness of sins: 11. The resurrection of the body: 12. And the life everlasting.