Complex sentence: Many conservative Reformed churches which are strongly Calvinistic formed the World Reformed Fellowship which has about 67 member denominations, most are not part of the World Communion of Reformed Churches because of its ecumenial attire.
Split into simpler sentences: Many conservative Reformed churches which are strongly Calvinistic formed the World Reformed Fellowship which has about 67 member denominations. Most are not part of the World Communion of Reformed Churches because of its ecumenial attire.