1 Corinthians 3:1

Irenaeus Against Heresies Book V

For men of this stamp do indeed say that they believe in the Father and the Son, but they never meditate as they should upon the things of God, neither are they adorned with works of righteousness; but, as I have already observed, they have adopted the lives of swine and of dogs, giving themselves over to filthiness, to gluttony, and recklessness of all sorts. Justly, therefore, did the apostle call all such "carnal" and "animal,"[57]

Clement of Alexandria The Instructor Book I

So also may we take the Scripture: "And I, brethren, could not speak unto you as unto spiritual, but as unto carnal, even as unto babes in Christ; "[79]

Clement of Alexandria Stromata Book V

For ye are yet carnal: for whereas there is among you envy and strife, are ye not carnal, and walk as men? "[63]

Clement of Alexandria Stromata Book V

I have fed you with milk, not with meat: for ye were not yet able; neither are ye now able. For ye are yet carnal."[125]

Tertullian The Prescription Against Heretics

That they likewise (remember), what was written to the Corinthians, that they "were yet carnal," who "required to be fed with milk," being as yet "unable to bear strong meat; "[295]

Cyprian Treatise X On Jealousy and Envy

For ye are yet carnal: for whereas there are still among you jealousy, and contention, and strifes, are ye not carnal, and walk as men? "[32]

Cyprian Treatise XII Three Books of Testimonies Against the Jews

For ye are still carnal: for where there are in you emulation, and strife, and dissensions, are ye not carnal, and walk after man? "[378]

Origen Commentary on Matthew Book XI

Moreover, interpret with me allegorically the children in accordance with the passage, "I could not speak unto you as unto spiritual, but as unto carnal, as unto babes in Christ; "[20]