Article 18 - Of the Incarnation of Jesus Christ
We confess, therefore, that God did fulfill the prom ise, which He made to the fathers, by the mouth of His holy prophets, when He sent into the world, at the time appointed by Him, His own, only-begotten and eternal Son, who took upon Him the form of a servant, and became like unto man, really assuming the true human nature, with all its infirmities, sin excepted, being conceived in the womb of the blessed Virgin Mary, by the power of the Holy Ghost, without the means of man, and did not only assume human nature as to the body, but also a true human soul, that He might be a real man. For since the soul was lost as well as the body, it was necessary that He should take both upon Him, to save both. Therefore we confess (in opposition to the heresy of the Anabaptists, who deny that Christ assumed human flesh of His mother) that Christ is become a partaker of the flesh and blood of the children; that He is a fruit of the loins of David after the flesh; made of the seed of David according to the flesh; and fruit of the womb of the Virgin Mary, made of a woman, a branch of David; a shoot of the root of Jesse; sprung from the tribe of Judah; descended from the Jews according to the flesh; of the seed of Abraham, since He took on Him the seed of Abraham, and became like unto His brethren in all things, sin excepted, so that in truth He is our Immanuel, that is to say, God with us.
Article 19 - Of the Union and Distinction of the two Natures in the person of Christ
We believe that by this conception, the person of the Son is inseparably united and connected with the human nature; so that there are not two Sons of God, nor two persons, but two natures united in one single person: yet, that each nature retains its own distinct properties.
As then the divine nature hath always remained uncreated, without beginning of days or end of life, filling heaven and earth: so also hath the human nature not lost its properties, but remained a creature, having beginning of days, being a finite nature, and retaining all the properties of a real body. And though He hath by His resurrection given immortality to the same, nevertheless He hath not changed the reality of His human nature; forasmuch as our salvation and resurrection also depend on the reality of His body. But these two natures are so closely united in one person, that they were not separated even by His death. Therefore that which He, when dying, commended into the hands of His Father, was a real human spirit, departing from His body. But in the meantime the divine nature always remained united with the human, even when He lay in the grave. And the Godhead did not cease to be in Him, any more than it did when He was an infant, though it did not so clearly manifest itself for a while. Wherefore we confess ' that He is very God, and very man: very God by His power to conquer death; and very man that He might die for us according to the infirmity of His flesh.
Article 20 - That God hath manifested His justice and mercy in Christ
We believe that God, who is perfectly merciful and just, sent His Son to assume that nature, in which the disobedience was committed, to make satisfaction in the same, and to bear the punishment of sin by His most bitter passion and death. God therefore manifested His justice against His Son, when He laid our iniquities upon Him; and poured forth His mercy and goodness on us, who were guilty and worthy of damnation, out of mere and perfect love, giving His Son unto death for us, and raising Him for our justification, that through Him we might obtain immortality and life eternal.