Now Paul says, If thou wilt confess with thy mouth the Lord Jesus, and believe in thy heart that God raised him from the dead, thou shalt be saved. (Rom. 10:9.) The whole mystery of Christ is conveyed in these words. For we must first confess that the Word born of God the Father, that is, the only-begotten Son of His substance, is Lord of all, not as one who had gained His Lordship from without and by stealth, but who is in truth by His nature Lord, as well as the Father. Next we must confess that God raised Him from the dead, who was Himself truly made man, and suffered in the flesh for us; for such He rose from the dead. Whoever then will so confess Christ before men, namely, as God and the Lord, Christ will confess him before the angels of God at that time when He shall descend with the holy angels in the glory of His Father at the end of the world.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).