Nehemiah 9:32

Now therefore, our God, the great, the mighty, and the terrible God, who keepest covenant and mercy, let not all the trouble seem little before thee, that hath come upon us, on our kings, on our princes, and on our priests, and on our prophets, and on our fathers, and on all thy people, since the time of the kings of Assyria unto this day.

Now therefore, our God ... who keepest covenant and mercy. God's fidelity to His covenant is prominently acknowledged; and well it might, because their whole national history bore testimony to it. But as this could afford them little ground of comfort or of hope, while they were so painfully conscious of having violated it, they were driven to seek refuge in the riches of divine grace; and hence, the special style of invocation here adopted, "Now therefore, our God, the great, the mighty, and the terrible God, who keepest covenant and mercy."