Philippians 4:13

Epistle of Ignatius to the Smyrnaeans

He who became a perfect man inwardly strengthening me.[30]

Origen de Principiis Book III

And therefore Paul exclaims with confidence, "I can do all things through Christ, who strengtheneth me; "[306]

Origen Against Celsus Book VIII

Should He even wish us again to contend and struggle for our religion, let the enemy come against us, and we will say to them, "I can do all things, through Christ Jesus our Lord, which strengtheneth me."[132]

Origen Commentary on Matthew Book XII

Of those, then, who seek to enter in, those who are not able to enter will not be able to do so, because the gates of Hades prevail against them; but in the case of those against whom the gates of Hades will not prevail, those seeking to enter in will be strong, being able to do all things, in Christ Jesus, who strengtheneth them.[89]