Psalms 114:1-2

When Israel went out of Egypt That is, were brought out by mighty signs and wonders wrought by the power of God; from a people of a strange language From a barbarous people, as some render it: though it is not improbable that the Israelites, though they stayed so long in Egypt, yet, having little converse or society with the Egyptians, knew little or nothing of their language. Judah was his sanctuary The tribe of Judah is here put for the Jews in general, because Judah was their principal tribe. And they are said to have been his sanctuary and his dominion, because he appointed that a tabernacle should be placed for himself among them, promised to receive their homage and service, granted them a glorious token of his presence, and became their Lawgiver, King, and Governor, in a peculiar sense.