A.T. Robertson Commentary Romans 3:7

"But if the truth of God through my lie abounded unto his glory, why am I also still judged as a sinner?" — Romans 3:7 (ASV)

Through my lie (εν τω εμω ψευσματ). ] Old word from ψευδομα, to lie, only here in N.T. Paul returns to the imaginary objection in verse 5. The MSS. differ sharply here between ε δε (but if) and ε γαρ (for if). Paul "uses the first person from motives of delicacy" (Sanday and Headlam) in this supposable case for argument's sake as in 1 Corinthians 4:6. So here he "transfers by a fiction" (Field) to himself the objection.