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19 And ye have eaten fat to satiety, And ye have drunk blood -- to drunkenness, Of My sacrifice that I sacrificed for you.
"Birds" represent rational concepts in the external man and intellectual concepts in the internal man.
9 For lo, I am commanding, And I have shaken among all the nations the house of Israel, As [one] doth shake with a sieve, And there falleth not a grain [to] the earth.