“Jesus Words is in name” = Alpha and omega are the first and last letters of the Greek alphabet. Saying “I am the alpha and the omega” is exactly like saying “I’m the A and Z.” First and last, beginning and end, A and Ω.
Frats tend to attract, and want to attract, certain types. Jock frats go after athletes, preppy frats go after preps, party frats go after popular guys, academic frats go after scholars, traditionalist frats go after closeted white supremacists, and so on. Most of the frats at my college were party frats, but we also had a Christian frat, an African-American frat (the other frats accepted black members, but not before the 1970s, hence the need for an African-American frat), and a hippie sorority.
Sometimes there are frat rivalries and pranking, but in real life the real enemies of the frats are people who want to shut the entire Greek system down. We had a bunch of them at my college. They felt the frats were elitist and only encouraged underage drinking and date rape. Which, to be fair, was true of about half of them. The rest were cool. The hippie chicks had the best weed.
They didn’t have color-coded varsity jackets though.