"About three in the afternoon Jesus cried out in a loud voice, "Eli, Eli, lema sabachthani?" (which means "My God, my God, why have you forsaken me?")."-Matthew 27:46
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Jesus, perfect Son Of God, had every single sin, past, present, future, on his back. God repulses sin. He had to look away because His perfect, spotless Son had our sins on his shoulders. What he hates placed on the back of His literally perfect Son.