This is part of the painting Agape from a portfolio by John Linton Roberson. Suzy Spreadwell, the heroine of the portfolio, is described as a good Christian girl who loves Jesus, perhaps a little too much sometimes:

Suzy Spreadwell kneeling in front of a priest in a blowjob posture as he preaches, clearly ecstatic, while standing in the intimate embrace Satan or one of his demons

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