“Those to whom We gave the Book rejoice at what has been sent down to you, but some of the opposing factions deny part of it. Say, ‘I have been commanded to worship God alone and not to associate anything with Him. To Him I invite others, and to Him I shall return.’”

~ Holy Quran 13:36 (Safi Kaskas)

All religions inspired of God share common ground, as they’re inspired of the same source, the God of all creation. Streams from the same Ocean. This is acknowledged in the Quran, though the Quran cautions that some will oppose the new revelation. This is natural, as while some will appreciate, others will feel threatened by the new revelation and competition from a new religious community.