According to 1 Timothy 6:13, before whom did Christ Jesus make the good confession?

Answer: Pontius Pilate

Paul charges Timothy before Christ Jesus, "who made the good confession in His testimony before Pontius Pilate."

“I charge you in the presence of God, who gives life to all things, and of Christ Jesus, who made the good confession in His testimony before Pontius Pilate:”— 1 Timothy 6:13 (BSB)