Theophylact of Ohrid, on 1John 4:1

“Dearly beloved, believe not every spirit, but try the spirits if they be of God: because many false prophets are gone out into the world.”

“Having explained the teaching on love for one's neighbor, and having pointed to this love as a sign of the abiding of the Spirit whom we have received, the apostle now adds a criterion for distinguishing true brothers and neighbors, so that we, keeping this distinction in mind, might not on account of the commandment of love enter into close relations with false brothers, false apostles, and false prophets, and thereby cause ourselves great harm. For by having fellowship with them as though they were of like mind, we will, first, harm ourselves by fearlessly communicating the teaching of the faith to the impious and casting what is holy before dogs; then we will harm those who are entrusted to us. For our love toward false brothers, false apostles, and false prophets will dispose many to accept them as teachers and to believe their teaching without caution, since they will be led into deception by our association with them. What then is the sign by which they are recognized?”

Imported from an open dataset — not yet checked against the printed edition.