The sacred text lies open, but their minds are elsewhere. Their bodies, pressed close in the confined space, respond to each other's heat. The elder sibling's cock stirs, tenting his pants, while the younger's breath comes in short gasps, her nipples hardening against the fabric of her bra. They're haunted by guilt and desire, their bodies yearning for the taboo. As their father's voice echoes in their minds, they succumb, hands reaching out to touch, to explore, to find solace in each other's forbidden warmth.