O men, men, it were well for you, that like Gamaliel you would leave the people of God in peace; for if this work is of men, it will come to naught, but if it is of God, you cannot overthrow it; hence, take good heed, lest you run against the sword of the Lord, and be found even to fight against God. Persecute Jesus of Nazareth no longer, and leave Israel unmolested. Acts 5:34, etc.; 9.
To come now to the purport and beginning of your letter, which you sent me in order to instruct me in all the arguments and intelligence pertaining to the faith, I find that you greet me in the name of the Father, the Son, and the Holy Ghost. To this I reply: Since you boast of being a Christian, and regard me as a reprobate and unbeliever, and as laboring under a false opinion, therefore I say that you are wrong in writing thus, for John says: If there come any unto you, and bring not this doctrine, receive him not into your house, neither greet him; for he that greeteth him is partaker of his evil deeds. 2 John 10,11. And Paul says that if any man that is called a brother be nevertheless a fornicator or the like, he, as also an unbeliever, shall not inherit the kingdom of God. Hence, since they cannot inherit the kingdom of God, we are not to eat bread with them, for the destruction of their flesh, that they may consider from whence they are fallen. 1 Cor. 5.
In the second place, you call me your brother. Why am I your brother, seeing we differ in faith? Is it because we are all created of God the Father? I say no to this; for if we were brethren according to the spirit, and according to the doctrine of Christ and the apostles, we must be in one faith and practice, and be led by one spirit, which, however, is far from being the case; for the brotherhood must spring out of the heavenly regeneration, through the hearing of the divine word, from the earthly into the heavenly. This brotherhood is not ascribed to unbelievers, nor does it originate in carnal descent, as Paul clearly indicates, when he says: “Be not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? and what concord hath Christ with Belial? or what part hath he that believeth with an infidel? and what agreement hath the temple of God with idols?” etc. 2 Cor. 6:14, etc. For the brotherhood consists in this: Endeavoring to keep the unity of the Spirit; to abide in one hope of the calling; one Lord, one faith, one baptism. Eph. 4:3. Mark, you are satisfied with your baptism, whether administered by the midwife, or by confirmation, and the like; not considering that God would dwell above all, and in us all, through his word.
Since, then, you are so contrary to me, and I to you, in faith, doctrine, life and spirit, why do you call me brother, I ask you once more? Or, if I am a heretic and a renegade from the truth, why do you not avoid me, after I have been admonished once or twice? for this is commanded by the Scriptures. But alas! you do not obey the divinely inspired Scriptures, but choose them unto your own destruction. 2 Pet. 3:16.
In the third place, I find in your deceptive letter of instruction, that I am accused and decried only with reference to error and misapprehension regarding baptism, no other articles being mentioned. What shall I say to this? Are all your gods an abomination to you? and is it all over with your false doctrine and church usages? I think not; you are too fond of deceitful gain. But I well know your intention; you think that when you shall have deprived me of one, you will also get the rest, according to what you yourself said in Delft. O what a brother you are to me, fine, indeed, in appearance! But my Teacher and Master Christ Jesus has warned me against you, to “be wise as serpents, and harmless as doves.” Matt. 10:16. Yes, you are such a brother to me, as the old, lying prophet, who deceived the man of God by his lies; for God had commanded the man of God to prophesy against the altar, and to eat no bread, nor drink water at that place, until he should have returned into his own country. But the seed of the serpent, the old prophet, said: “Eat bread with me, and drink water.” The man of God answered: “God has forbidden me this.” But the deceiver said: “I am also a prophet of the Lord, as thou art, and the Lord spake to me, that you should eat bread here, and drink water.” Then the man of God went in with him, and transgressed the commandment of the Lord; wherefore, in punishment of his disobedience, he was slain by a lion on the way. 1 Kings 13.