Madonna has upset a group of rabbis after penning a song for her new album dedicated to a Kabbalist rabbi, according to reports.
Madonna's new album is out in November
Confessions on a Dance Floor features a song called Isaac, about a 16th Century Jewish mystic called Yitzhak Luria.
But rabbis who guard his tomb in Israel have said it is forbidden to use his name for profit.
Rabbi Rafael Cohen told the Israeli Maariv newspaper Madonna would receive a "punishment".
"Jewish law forbids the use of the name of the holy rabbi for profit," said Cohen, who runs a seminary named after Luria in the northern Israel town of Safed.
"Her act is just simply unacceptable and I can only sympathise for her because of the punishment that she is going to receive from the heavens."
Rabbi Israel Deri, who is deputy chairman of the Religious Sites Authority, which oversees Luria's burial site, went even further in his condemnation of the singer.
"Such a woman brings great sin on Kabbalah," he told Maariv.
"I hope that we will have the strength to prevent her from bringing sin upon the holiness of the rabbi (Yitzhak Luria)."
Madonna visited Israel in 2004 as part of her Kabbalah education but it is thought she did not travel to the site of Luria's tomb.
She and husband Guy Ritchie have immersed themselves in the Kabbalah sect, which is based on 5th and 12th Century Jewish mystical texts from Spain and the Middle East.