I first heard Johnny Cash sing this song at a Billy Graham crusade sometime in the 1970s and I learned it at that time. It’s maybe more timely today than it was back then. In later versions there are a couple lines in the 2nd verse that are different. I’m including an example of each below.
I’m not sure that Johnny Cash wrote this song, but I’m assuming he did and I couldn’t find any info online contrary to that.
Before anybody says “What’s the strumming pattern,” the song is in 4/4 time so any common 4/4 pattern is fine. I just did what sounded right to me at the time, and it’s by no means THE strumming pattern.