Protestantism in Poland and Bohemia - James Aitken Wylie

Conference of all three Churches, and the town of
Sandomir was chosen as the place of meeting. The
Synod met in the beginning of April, 1570, and
was attended by the Protestant grandees and nobles
of Poland, and by the ministers of the Bohemian,
Reformed, and Lutheran Churches. After several
days discussion it was found that the assembly was
of one heart and mind on all the fundamental
doctrines of the Gospel; and all agreement, entitled
"Act of the Religious Union between the Churches
of Great and Little Poland, Russia, Lithuania, and
Samogitia," was signed on the 14th of April,
1570.[9]
The subscribers place on the front of their
famous document their unanimity in "the doctrines
about God, the Holy Trinity, the Incarnation of the
Son of God, Justification, and other principal
points of the Christian religion." To give effect to
this unanimity they "enter into a mutual and sacred
obligation to defend unanimously, and according to
the injunctions of the Word of God, this their
covenant in the true and pure religion of Christ,
against the followers of the Roman Church, the
72