Fowl signify spiritual truth; a bird, natural truth; and a winged thing, sensual truth. Fowl of heaven, as in Hosea 2:18, signify the affections of truth; and reptiles of the earth, the affection of the knowledges of truth and good. Fowl signify thoughts, and all that creeps on the ground, the sensual principle. Fowl signify intellectual things.

(Референци: Arcana Coelestia 777; Hosea 2)

421. Verses 2, 3. And I saw another angel ascending from the rising of the sun, having the seal of the living God; and he cried with a great voice to the four angels, to whom it was given to hurt the earth and the sea; Saying, Hurt not the earth, nor the sea, nor the trees, till we have sealed the servants of our God on their foreheads.

2. "And I saw another angel ascending from the rising of the sun," signifies the Divine love going forth from the Lord. n. 422); "having the seal of the living God," signifies the Divine will (n. 423); "and he cried with a great voice," signifies Divine command (n. 424); "to the four angels, to whom it was given to hurt the earth and the sea," signifies as yet preventing the influx from becoming intense (n. 425).

3. "Saying, Hurt not the earth, nor the sea, nor the trees," signifies lest the good perish with the evil wherever they are n. 426; "till we have sealed the servants of our God on their foreheads," signifies that those who are in truths from good are first to be separated n. 427.