(CNN) – A pastor encouraging his congregation to have sex? It may sound unlikely, but it’s what one prominent Texas pastor is doing this weekend, with a 24 hour rooftop “bed-in” with his wife.

To encourage members of his congregation and others to take part in what he calls a “sexperiment,” Dallas pastor Ed Young and his wife Lisa began staging a “bed-in” on Friday morning, laying in a bed on the roof of their Texas church for 24 hours.

They say they want to illustrate that sex begins in heaven.

“It’s time to put the bed back in church and God back in the bed because God is the one that thought sex up,” says Ed Young, senior pastor of Fellowship Church.

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