For the word of the Lord is right; and all his works are done in truth. (Psalm 33:4)
The Lord is right.
 Verses 4-21 state the reasons for praising Jehovah. Among these reasons is the fact that Jehovah is righteous and merciful (vs. 4, 5, 18; see Ps. 25:10; 26:3; 36:5, 6).