PARIS — The former leader of the Roman Catholic Church in Belgium urged a victim of serial sexual abuse by a bishop to keep silent for a year, until the bishop — the victim’s own uncle — could retire, according to tapes made by the victim last April and published over the weekend in two Belgian newspapers.

The tapes, which church authorities have verified as accurate, are among the more revealing documents in the continuing scandal of sexual abuse by clerics and subsequent cover-ups by the church. And having a record of a cardinal entreating an abuse victim to keep his silence is another embarrassment for the Catholic Church.

Cardinal Godfried Danneels, 77, who retired as the archbishop of Brussels in January after 30 years, met with the victim, now 42, and his uncle, Bishop Roger Vangheluwe, 73, on April 8 to press the victim either to accept a private apology or to wait until the bishop retired, according to the tapes.

“The bishop will resign next year, so actually it would be better for you to wait,” the cardinal told the victim. “I don’t think you’d do yourself or him a favor by shouting this from the rooftops.” The cardinal warned the victim against trying to blackmail the church and suggested that he accept a private apology from the bishop and not drag “his name through the mud.”