Interested in Language
Source: The Gods, 11th paragraphStill, even in the earliest records Zeus had grandeur. In the Iliad Agamemnon prays: "Zeus, most glorious, most great, God of the storm-cloud, thou that dwellest in the heavens." He demanded, too, not only sacrifices from men, but right action. The Greek Army at Troy is told "Father Zeus never helps liars or those who break their oaths." The two ideas of him, the low and the high, persisted side by side for a long time.
I Know the meanings of each word but I can't understand the blue part as a whole.
Would you please be kind enough to clarify it to me?