David says in Psalm 18:25-27 (NKJV),
“With the merciful You will show Yourself merciful;
With a blameless man You will show Yourself blameless;
With the pure You will show Yourself pure;
And with the devious You will show Yourself shrewd.
For You will save the humble people,
But will bring down haughty looks.”
“You have set a boundary that they may not pass over, that they may not return to cover the earth. Psalm 104:9 (NKJV)
Jesus says in Matt 5:7-8, “Blessed are the merciful, for they shall obtain mercy.
Blessed are the pure in heart, for they shall see God.“