Jesus. App-98.
I am. sinful man. True conviction has regard to what one is, not to what one has done. Compare Manoah (Judges 13:22), Israel (Exodus 20:19), men of Beth-shemesh (1 Samuel 6:20), David (2 Samuel 12:13), Job (Job 40:4; Job 42:2-6), Isaiah (Isaiah 6:5).
a sinful man. a man (App-123.). sinner. Emphasizing the individual.
Lord. Not "Jesus", as in Luke 4:34. See App-98.