People said there is 'trinity' but when I read this Scripture and does this seem 'trinity' to you?

“THE great day of Jehovah is near.” This warning cry was uttered by the prophet Zephaniah in the middle of the seventh century B.C.E. (Zephaniah 1:14) Within 40 or 50 years, the prophecy was fulfilled when the day of executing Jehovah’s judgments came upon Jerusalem and upon those nations that had defied Jehovah’s sovereignty by mistreating his people. Why is this of interest to people living at the close of the 20th century? We are living at the time when Jehovah’s final “great day” is fast approaching. Just as in Zephaniah’s time, Jehovah’s “burning anger” is about to blaze against the modern-day equivalent of Jerusalem—Christendom—and all the nations that mistreat Jehovah’s people and defy his universal sovereignty.—Zephaniah 1:4; 2:4, 8, 12, 13; 3:8; 2 Peter 3:12, 13.