First verse I was ever taught:

Revelation 3:20 Here I am! I stand at the door and knock.
If anyone hears my voice and opens the door,
I will come in and eat with him, and he with me.

A droplet of pure Gospel, and still a favorite. As a doctrine for daily life, I can’t beat:


Micah 6:8 He has showed you, O man, what is good.
And what does the LORD require of you?
To act justly and to love mercy
and to walk humbly with your God.