They have not served thee in their kingdom. There is no need of altering the reading here. "In their kingdom" means, "while they had a kingdom of their own, and were not subjects, as now, to a foreign power."
Thy great goodness. See above, Nehemiah 9:25. The large and fat land. Compare Exodus 3:8. Although the limits of Palestine are narrow, yet the land which God flare to his people, extending as it did from the Euphrates to the river of Egypt (Genesis 15:18), might well he termed a "large" or "broad" land.