'To howl' signifies grief caused by vastation.

In Ezekiel 32:18, this signifies grief on account of their damnation. (Apocalypse Explained 659[4])

In Micah 1:8, this signifies the grief of the angels and of the men of the church. (Apocalypse Explained 695[24])

In Matthew 13:42, this signifies the grief of sensuous men in their opposition to truths. (Apocalypse Revealed 435)

In Revelation 18:9, this signifies people in control in the church mourning from embarrassment at the loss of wealth. (Apocalypse Revealed 467)

(Odkazy: Apocalypse Explained 406)

7724. 'Your little children also will go with you' means that [they may worship Him] from truth. This is clear from the meaning here of 'little children' as truth, for 'little children' implies boys, adolescents, and young men, In short, their sons, who mean aspects of intelligence, thus truths, see 7668; and from the meaning of 'going with you' as an assurance that they are to be left alone in order that they may worship the Lord their God. Let me say what worshipping the Lord from good is, and what worshipping the Lord from truth without good is, meant here when Pharaoh says that the flocks and herds are to stay behind and the little children to go. The truest kind of worship consists in an offering made from good through truth, for the Lord is present in good; but worship offered from truth without good is not worship, only outward religious ceremony and action alone with nothing real in them since without good truth is no more than the knowledge of truth. To become the truth of faith that knowledge must be combined with good, and when combined with good it passes into the internal man and becomes faith. (The fact that faith without charity is not faith has been shown often.) From this one may see what worship from good is and what worship from truth without good is. By the good from which worship springs one should understand the good of life, good that has been made spiritual through combination with truth, for spiritual good derives its particular nature from truth, and the essence of truth is good, so that good is the soul of truth. From this one may again see what truth without good is like, namely like a body without its soul, that is, like a corpse.