Mankind has travelled a long road, since our first parents sinned, and turned a corner, exiled from God's presence. Another corner was turned when God made a Covenant with Abraham, and taught His People, and promised a Saviour. Another corner was turned with the arrival of Jesus, God and man, Saviour, Who died for our sins, to bring forgiveness, and union with the Father for all believers. To ignore Jesus and to prefer inter-faith prayer, in which He is not mentioned, is to deny the Christian faith; it says, in effect, that for union with God, and salvation,
In the whole history of our salvation, a corner was turned when Abraham was called to leave his homeland and to follow where God led him. Later, Moses too was obedient, and received the Ten Commandments - all as preparation for the time when God Himself would come to earth to make people holy, and to offer His life in Sacrifice.
The Lord asks Catholics who doubt His Presence in the Blessed Sacrament: Ff Christ could become man, through the Virgin Mary, and allow Himself to die and be buried, and yet visit Abraham and the Prophets in the underworld, then ascend to Heaven to live there in glory, can He not come down to earth again, by the same power, as the Holy Spirit makes Him Present on the altar, as the bread and wine are changed into Christ's Body and Blood, and His friends prepare to receive Him?
Faith is a gift from God, but it comes when people who have heard the story of God's action proclaimed, accept the grace to believe it. That story or proclamation is about God's plan of Salvation. It includes His gradual Revelation of Himself to Abraham, Moses, and others, and His Revelation in His Son, Jesus Christ, who is God-made-man, and who lived on earth, and died, and rose from the dead, to conquer sin and death, to save sinners.