With all our strength, therefore, let us beware lest we receive communion from or grant it to heretics; Give not that which is holy unto the dogs, saith the Lord, neither cast ye your pearls before swine St. Matt. vii. 6., lest we become partakers in their dishonour and condemnation. For if union is in truth with Christ and with one another, we are assuredly voluntarily united also with all those who partake with us. For this union is effected voluntarily and not against our inclination. For we are all one body because we partake of the one bread, as the divine Apostle says 1 Cor. x. 17..