Toward the end of Ut Unum Sint, John Paul cites some of the questions that must be addressed in conversation with the communities issuing from the tragic divisions of the sixteenth century: (1) The relationship between Sacred Scripture,
as the highest authority in matters of faith, and Sacred Tradition,
as indispensable to the interpretation of the Word of God; (2) The Eucharist
as the Sacrament of the Body and Blood of Christ, an offering of praise to the Father, the sacrificial
memorial and Real Presence of Christ and the sanctifying outpouring of the Holy Spirit; (3) Ordination,
as a Sacrament, to the threefold ministry of the episcopate, presbyterate, and diaconate; (4) The Magisterium of the Church, entrusted to the pope and the bishops in communion with him, understood
as a responsibility and an authority exercised in the name of Christ for teaching and safeguarding the faith; (5) The Virgin Mary,
as Mother of God and Icon of the Church, the spiritual Mother who intercedes for Christ's disciples and for all
humanity.
His series of black and white works, The Stations of the Cross (1958 - 66), helped to recover from a heart attack and its subtitle Lema sabachthani or Why have you forsaken me referred to the Jesus» last words on the cross and was also interpreted
as a
memorial to the victims of the holocaust,
as a part of artist's intention to evoke the victims of
humanity throughout history.