The melody of O Come All Ye Faithful by Casting Crowns runs 200 notes across 34 bars, 2:58 long in G at 100 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? O Come All Ye Faithful chords and lyrics.