Romans 2:5
The fact is that in the stubbornness of your impenitent heart you are treasuring up against yourself anger on the day of Anger--the day when the righteousness of God's judgements will stand revealed.
Romans 3:4-6
No, indeed; let us hold God to be true, though every man should prove to be false. As it stands written, "That Thou mayest be shown to be just in the sentence Thou pronouncest, and gain Thy cause when Thou contendest."
Revelation 15:3
And they were singing the song of Moses, God's servant, and the song of the Lamb. Their words were, "Great and wonderful are Thy works, O Lord God, the Ruler of all. Righteous and true are Thy ways, O King of the nations.
Revelation 16:7
And I heard a voice from the altar say, "Even so, O Lord God, the Ruler of all, true and righteous are Thy judgments."