Catechism of the Catholic Church
Paragraph 228
"Hear, O Israel, the LORD our God is one LORD..." (Deut 6:4; Mk 12:29). "The supreme being must be unique, without equal.... If God is not one, he is not God" (Tertullian, Adv. Marc., 1, 3, 5: PL 2, 274).
Biblical citations
No semantically close passages found in the indexed corpus.