He has been dubbed the high priest of Catholic Kama Sutra, but Polish Friar Ksawery Knotz says that by giving married couples tips on how to practice divine sex, he is simply doing God's work.

"I encourage married couples to pray for a good and happy sex life - it's a way to come closer to God. At first people are shocked, but later they are happily surprised ," the 43-year-old Roman Catholic monk says who like all Catholic clergy has taken a vow of celibacy.

Knotz has held retreats with more than 3,000 devoutly Roman Catholic couples in Poland since 2000, with the tacit blessing of church superiors and nod from secular therapists.

Couples are so eager to attend his workshops that all his days are booked for the next year.

"If you believe in God, then you believe God is involved in life, in love, marriage, in sex and sexuality - it seems natural to talk about sex to remove taboos and the label of sinfulness," says the monk, who resides in a monastery of the Order of Friars Minor Capuchin.

The friar admits the popular teachings of the Roman Catholic Church on the subject of sex have been weak if not downright dissuasive.

"It's been labeled taboo or sinful," Knotz says, but is quick to point out that in keeping with the church's teaching, he preaches only about the joys of sex restricted to marriage between the two genders.

His book, "The Act of Marriage", and "Chance to Meet", launched in 2004 have both English and Polish versions and graphically explore the steamy details of divine lovemaking.