A.T. Robertson Commentary John 12:44

"And Jesus cried and said, He that believeth on me, believeth not on me, but on him that sent me." — John 12:44 (ASV)

Cried and said (εκραξεν κα ειπεν). First aorist active indicative of κραζω, to cry aloud, and second aorist active of defective verb ερω, to say. This is probably a summary of what Jesus had already said as in verse 36 John closes the public ministry of Jesus without the Synoptic account of the last day in the temple on our Tuesday (Mr 11:27-12:44; Matthew 21:23:39; Luke 20:1–21:4).

Not on me, but on him (ου εις εμε, αλλα εις τον). "Not on me only, but also on," another example of exaggerated contrast like that in verse 30. The idea of Jesus here is a frequent one (believing on Jesus whom the Father has sent) as in 3:17f.; 5:23f.,30,43; 7:16; 8:42; 13:20; 14:1; Matthew 10:40; Luke 9:48.