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耶和華啊,求你記念我如茵蔯和苦膽的困苦窘迫。
The foot, as in Deuteronomy 33:3, signifies an inferior principle. To set the right foot on the sea and the left on the earth, as in Revelation 10:2, signifies that the Lord has the universal church under His intuition and dominion.
(References: Apocalypse Explained 10 [2]; Arcana Coelestia 2714)