 Filioque was mentioned for the first time at the Third Council of Toledo in 589 and it was added by the Roman Catholic Church to the Credo in the 11th century.The Holy Spirit is believed to eternally proceed from the Father, as Christ says in , and not from the Father "and" the Son, as the Roman Catholic and Protestant churches claim.The Greek Orthodox Church teaches that the Holy Spirit proceeds "through" the Son, but only "from" the Father.