I always found the Shaker hymn "Simple Gifts" to be devoid of content despite the loveliness of the tune.
For simple lyrics which have depth, here are three. First,
Wow. How can so much be said about life in so few words?
Also:
Twinkle, twinkle, little star,
How I wonder what you are!
Up above the world so high,
Like a diamond in the sky!
The rest of that song is here.
And one more, the verse that some claim captures everything about Christian faith:
- Jesus loves me! This I know,
- For the Bible tells me so.
- Little ones to Him belong;
- They are weak, but He is strong.
The rest of that song is here.