Saint Thomas Aquinas, commenting on Romans 1, points out that sodomites are idolaters.
St. Paul points out in Romans 1:32 that homosexual activists are sodomites.
St. Thomas Aquinas: Vices against Nature Are Also against God
St. Hildegard of Bingen O.S.B: Homosexuality is the Supreme Offense against God
Saint Bernardine of Siena: "the vice of sodomy ... is the greatest sin."