It should be very encouraging to know that like Pop, Rock, and Country music, Worship songs are generally easy to play and very repetitive. It’s very cool that with only a few chords, you can play hundreds of popular worship songs on guitar.
The 1, 4, 5, pattern with a 6mi or 2mi and an occasional 7b or 5/7 pretty much sums up most of the modern songs on the radio. Ok so a 3mi maybe, but the diatonic chords of any major scale generally are used in our western music. Just take a simple “C” scale. “C Dmi Emi F G Ami Bdim C” We usually substitute a G/B for the 7th scale degree because diminished chords just don't sound modern.