A reply of St. Joan of Arc to her judges sums up the faith of the holy doctors and the good sense of the believer: "About Jesus Christ and the Church, I simply know they're just one thing, and we shouldn't complicate the matter." 233
Catechism number 810
"Hence the universal Church is seen to be 'a people brought into unity from the unity of the Father, the Son, and the Holy Spirit'" (LG 4 citing St. Cyprian, De Dom. orat. 23: PL 4, 553).