Psalm 18:25-30

With the merciful you show yourself merciful;

with the blameless man you show yourself blameless;

with the purified you show yourself pure;

and with the crooked you make yourself seem tortuous.

For you save a humble people,

but the haughty eyes you bring down.

For it is you who light my lamp,

the Lord my God lightens my darkness.

For by you I can run against a troop,

and by my God I can leap over a wall.

This God -- his way is perfect,

the word of the Lord proves true;

he is a shield for all those who take refuge in him.

(Psalm 18:25-30, ESV)

I love how it talks about God showing his qualities of mercy, blamelessness and purity to the merciful blameless and pure.  He just shows what he is.  

But to the crooked he makes himself seem tortuous.  Because he is not tortuous.  Yet, to those who spit in his face, he seems as though he is.

Also:  "...and by my God I can leap over a wall." 

How fantastic is that?

This God.  My God.