Definition of Chalcedon (451 AD) Following, then, the holy fathers, we unite in teaching a

                Definition of Chalcedon (451 AD)

Following, then, the holy fathers, we unite in teaching all men
to confess the one and only Son, our Lord Jesus Christ. This
selfsame one is perfect both in deity and in humanness; this
selfsame one is also actually God and actually man, with a
rational soul  and a body.  He is of the
same reality as God as far as his deity is concerned and of the
same reality as we ourselves as far as his humanness is
concerned; thus like us in all respects, sin only excepted.
Before time began he was begotten of the Father, in respect of
his deity, and now in these "last days," for us and behalf of
our salvation, this selfsame one was born of Mary the virgin,
who is God-bearer in respect of his humanness.

We also teach that we apprehend this one and only Christ-Son,
Lord, only-begotten -- in two natures; and we do this without
confusing the two natures, without transmuting one nature into
the other, without dividing them into two separate categories,
without con- trasting them according to area or function.  The
distinctiveness of each nature is not nullified by the union.
Instead, the "properties" of each nature are conserved and both
natures concur in one "person" and in one reality .
They are not divided or cut into two persons, but are together
the one and only and only-begotten Word  of God, the Lord
Jesus Christ. Thus have the prophets of old testified; thus the
Lord Jesus Christ himself taught us; thus the Symbol of Fathers
 has handed down to us.

                      FORMULA OF CHALCEDON

Therefore, following the holy Fathers, we all with one accord
teach men to acknowledge one and the same Son, our Lord Jesus
Christ, at once complete in Godhead and complete in manhood,
truly God and truly man, consisting also of a reasonable soul
and a body; of one substance with the Father as regards his
Godhead, and at the same time of one substance with us as
regards his manhood; like us in all respects, apart from sin; as
regards his Godhead, begotten of the Father before the ages, but
as regards his manhood begotten for us men and for our
salvation, of Mary the Virgin, the God-bearer; one and the same
Christ, Son, Lord, Only- begotten, recognized in two natures,
without confusion, without change, without division, without
seperation; the distinction of natures being in no way annulled
by the union, but rather the characteristics of each nature
being being preserved and coming together to form one person and
subsistence, not as parted or separated into two persons, but
one and the same Son and Only-begotten God the Word, Lord Jesus
Christ; even as the prophets from earliest times spoke of him,
and our Lord Jesus Christ himself taught us, and the creed of
the Fathers has handed down to us.

                  STATEMENT OF CHALCEDON (451)

Definition of the Union of the Divine and Human Natures in the
Person of Christ. Council of Chalcedon, A.D. 451, Act V.

Therefore, following the holy fathers, we all with one accord
teach men to acknowledge one and the same Son, our Lord Jesus
Christ, at once complete in Godhead and complete in manhood,
truly God and truly man, consisting of a reasonable soul and
body; of one substance (homoousios) with the Father as regards
his Godhead, and at the same time of one substance with us as
regards his manhood; like us in all respects, apart from sin; as
regards his Godhead, begotten of the Father before the ages, but
yet as regards his manhood begotten, for us men and for our
salvation, of Mary the Virgin, the God-bearer (Theotokos); one
and the same Christ, Son, Lord, Only-begotten, recognized in two
natures, without confusion, without change, without division,
without separation; the distinction of natures being in no way
annulled by the union, but rather the characteristics of each
nature being preserved and coming together to form one person
and substance, not as parted or separated into two persons, but
one and the same Son and Only-begotten God the Word, Lord Jesus
Christ; even as the prophets from earliest times spoke of him,
and our Lord Jesus Christ himself taught us, and the creed of
the Fathers has handed down to us.

				(BCP, pg. 864)