"Leah" is from the verb "laa," - i.e., "to wear out," "to exhaust," "to be exhausted."
The Hebrew translation is "weak", "deprived of strength", "weary", "exhausted", "exhausted".
"Leah" is an image of "Wife", "Church", spiritual Assembly of people of a certain historical time of cognition of the Will of God by the people, who have weak spiritual "Sight", i.e. deprived of spiritual power, the ability to "see", to understand the true meaning of many sayings of the Prophets.