VATICAN CITY (RNS) -- Drawing on the words of Psalm 23, Pope John PaulII today listed the three conditions for going toheaven as purity of heart, faith and morality. The Roman Catholic pontiff told some 15,000 pilgrims, including fourchoirs from the United States, who attended his weekly general audiencein St. Peter's Square that the three conditions correspond to the threeparts of the psalm. "The first is a profession of faith in God the Creator to whom theworld and all its peoples belong," the pope said. He referred to thelines beginning, "The Lord is my shepherd, I shall not want." John Paul said it is the second scene that indicates the conditionsfor going to heaven. Here, he said, "attention switches to Jerusalem, God's holymountain. The faithful are waiting to enter the Temple in a liturgicalprocession. "They can only do so provided that they are pure in heart, faithfulto true religion and diligent in observing the moral law." "In the third scene, the faithful enter the Temple where they meetGod who reveals himself to them. Christians see this final scene as anevocation of Christ's victory over death, his descent into theunderworld and his glorious ascension into heaven," the pope said. The pope's address, known as a catechesis, was part of a series oftalks on the psalms he has been delivering at his general audiences. Among pilgrims attending the audience were the St. Augustine ChurchChoir from Andover, Mass., the Diocesan Choir of Madison, Wis., the HolyTrinity Church Choir in Bloomington, Ill., and the St. Xavier HighSchool Chorus from the Archdiocese of Louisville, Ky.