Luke 9:26

Tertullian On Idolatry

But "whosoever shall be ashamed of Me in the presence of men, of him will I too be ashamed," says He, "in the presence of my Father who is in the heavens."[100]

Tertullian Against Marcion Book IV

It is, however, a jealous God whom He here presents to me one who returns evil for evil. "For whosoever," says He, "shall be ashamed of me, of him will I also be ashamed."[810]

Tertullian On the Flesh of Christ

I am safe, if I am not ashamed of my Lord. "Whosoever," says He, "shall be ashamed of me, of him will I also be ashamed."[71]

Tertullian De Fuga in Persecutione

How will he confess, fleeing? How flee, confessing? "Of him who shall be ashamed of Me, will I also be ashamed before My Father."[25]

Constitutions of the Holy Apostles Book V

For of such a one our Lord declared, saying: "Whosoever shall deny me before men, and shall be ashamed of my name, I also will deny and be ashamed of him before my Father which is in heaven."[10]