God is the Savior Himself

Flee, therefore, those evil offshoots of Satan, which produce death-bearing fruit, whereof if any one tastes, he instantly dies. For these men are not the planting of the Father. For if they were, they would appear as branches of the cross, and their fruit would be incorruptible. By it He calls you through His passion, as being His members. The head, therefore, cannot be born by itself, without its members; God, who is the Savior Himself, having promised their union.

Ignatius of Antioch
Epistle to the Trallians
Chapter XI

Jesus really died and is God, the judge of the Earth.

He was crucified in reality, and not in appearance, not in imagination, not in deceit. He really died, and was buried, and rose from the dead, even as He prayed in a certain place, saying, “But do Thou, O Lord, raise me up again, and I shall recompense them.” And the Father, who always hears Him, answered and said, “Arise, O God, and judge the earth; for Thou shall receive all the heathen for Thine inheritance.”

Ignatius of Antioch
Epistle to the Trallians
Chapter X

God the Word was born of Mary

Mary then did truly conceive a body which had God inhabiting it. And God the Word was truly born of the Virgin, having clothed Himself with a body of like passions with our own. He who forms all men in the womb, was Himself really in the womb, and made for Himself a body of the seed of the Virgin, but without any intercourse of man.

Ignatius of Antioch
Epistle to the Trallians
Chapter X

Trinity and Holy Orders

They introduce God as a Being unknown; they suppose Christ to be unbegotten; and as to the Spirit, they do not admit that He exists. Some of them say that the Son is a mere man, and that the Father, Son, and Holy Spirit are but the same person, and that the creation is the work of God, not by Christ, but by some other strange power.

Be on your guard, therefore, against such persons. And this will be the case with you if you are not puffed up, and continue in intimate union with Jesus Christ our God, and the bishop, and the enactments of the apostles. He that is within the altar is pure, but he that is without is not pure; that is, he who does anything apart from the bishop, and presbytery, and deacons, such a man is not pure in his conscience.

Ignatius of Antioch
Epistle to the Trallians
Chapter VI – VII

There is no Church without Holy Orders

In like manner, let all reverence the deacons as an appointment of Jesus Christ, and the bishop as Jesus Christ, who is the Son of the Father, and the presbyters as the sanhedrim of God, and assembly of the apostles. Apart from these, there is no Church.

Ignatius of Antioch
Epistle to the Trallians
Chapter III

The Trinity, the Orders, and the Flesh and Spirit

Study, therefore, to be established in the doctrines of the Lord and the apostles, that so all things, whatsoever ye do, may prosper both in the flesh and spirit; in faith and love; in the Son, and in the Father, and in the Spirit; in the beginning and in the end; with your most admirable bishop, and the well-compacted spiritual crown of your presbytery, and the deacons who are according to God. Be ye subject to the bishop, and to one another, as Jesus Christ to the Father, according to the flesh, and the apostles to Christ, and to the Father, and to the Spirit; that so there may be a union both fleshly and spiritual.

Ignatius of Antioch
Epistle to the Magnesians
Chapter XIII

The Sunday Eucharist replaces the Sabbath

If, therefore, those who were brought up in the ancient order of things have come to the possession of a new hope, no longer observing the Sabbath, but living in the observance of the Lord’s Day, on which also our life has sprung up again by Him and by His death—whom some deny, by which mystery we have obtained faith, and therefore endure, that we may be found the disciples of Jesus Christ, our only Master—how shall we be able to live apart from Him, whose disciples the prophets themselves in the Spirit did wait for Him as their Teacher? And therefore He whom they rightly waited for, being come, raised them from the dead.

Ignatius of Antioch
Epistle to the Magnesians
Chapter IX