Zecharia 6 and Revelation 6

I was reading yesterday in the book of Zecharia where it talked about four types of horses. The thought came to me, "This is suspiciously like the Four Horsemen mentioned in Revelation." I later thought, "Revelation 6 talks about four horses." I hadn't realized it at the time, but I looked, and, behold, Zecharia and Revelation both mention four horses in the same chapter and in the same verses." I said, "Coincidence? Likely not."