Irenaeus quotes Justin Martyr against Marcion

In his book against Marcion, Justin does well say: “I would not have believed the Lord Himself, if He had announced any other than He who is our framer, maker, and nourisher. But because the only-begotten Son came to us from the one God, who both made this world and formed us, and contains and administers all things, summing up His own handiwork in Himself, my faith towards Him is stedfast, and my love to the Father immoveable, God bestowing both upon us.”

Irenaeus of Lyons
Against Heresies, Book IV
Chapter VI

Only one God, the Creator

How much safer and more accurate a course is it, then, to confess at once that which is true: that this God, the Creator, who formed the world, is the only God, and that there is no other God besides Him—He Himself receiving from Himself the model and figure of those things which have been made—than that, after wearying ourselves with such an impious and circuitous description, we should be compelled, at some point or another, to fix the mind on some One, and to confess that from Him proceeded the configuration of things created.

Irenaeus of Lyons
Against Heresies, Book II
Chapter XVI

There is only one God

For it was the work of Divine Providence on your behalf, that they, though unwillingly, bore testimony that what the prophets said regarding one God was true, in order that, the doctrine of a plurality of gods being rejected by all, occasion might be afforded you of knowing the truth.

Justin Martyr
Horatory Address to the Greeks
Chapter XXXVI

 

The Father has no name. The Son is begotten.

But to the Father of all, who is unbegotten there is no name given. For by whatever name He be called, He has as His elder the person who gives Him the name. But these words Father, and God, and Creator, and Lord, and Master, are not names, but appellations derived from His good deeds and functions. And His Son, who alone is properly called Son, the Word who also was with Him and was begotten before the works, when at first He created and arranged all things by Him, is called Christ, in reference to His being anointed and God’s ordering all things through Him;

Justin Martyr
Second Apology
Chapter VI

Baptism regenerates

As many as are persuaded and believe that what we teach and say is true, and undertake to be able to live accordingly, are instructed to pray and to entreat God with fasting, for the remission of their sins that are past, we praying and fasting with them. Then they are brought by us where there is water, and are regenerated in the same manner in which we were ourselves regenerated. For, in the name of God, the Father and Lord of the universe, and of our Savior Jesus Christ, and of the Holy Spirit, they then receive the washing with water.

Justin Martyr
First Apology
Chapter LXI

God created matter and has no personal name

And we have been taught, and are convinced, and do believe, that He accepts those only who imitate the excellences which reside in Him, temperance, and justice, and philanthropy, and as many virtues as are peculiar to a God who is called by no proper name. And we have been taught that He in the beginning did of His goodness, for man’s sake, create all things out of unformed matter; and if men by their works show themselves worthy of this His design, they are deemed worthy, and so we have received—of reigning in company with Him, being delivered from corruption and suffering.

Justin Martyr
First Apology
Chapter X

Father, Son and Spirit are worshiped and adored

But both Him, and the Son who came forth from Him and taught us these things, and the host of the other good angels who follow and are made like to Him, and the prophetic Spirit, we worship and adore, knowing them in reason and truth, and declaring without grudging to every one who wishes to learn, as we have been taught.

Justin Martyr
First Apology
Chapter VI