Earnest devotion.

"Thus said the LORD:

Let not the wise man glory in his wisdom;
Let not the strong man glory in his strength;
Let not the rich man glory in his riches.

But only in this should one glory:
In his earnest devotion to Me.

For I the LORD act with kindness,
Justice, and equity in the world;
For in these I delight.

- declares the LORD.

(jeremiah 9).