Loins
The loins, as in Ezekiel 29:7, signify the marriage of truth and good. In general, loins signify love, and when referring to the Lord, divine love. They can also signify the interiors of conjugial love. In Isaiah 11:5, they signify people in the divine good of love, and reins signify people in love towards their neighbor.
(Referenties: Apocalypse Revealed 830)
Isaiah 12
1
In that day you will say, "I will give thanks to you, Yahweh; for though you were angry with me, your anger has turned away and you comfort me.
2
Behold, God is my salvation. I will trust, and will not be afraid; for Yah, Yahweh, is my strength and song; and he has become my salvation."
3
Therefore with joy you will draw water out of the wells of salvation.
4
In that day you will say, "Give thanks to Yahweh! Call on his name. Declare his doings among the peoples. Proclaim that his name is exalted!
5
Sing to Yahweh, for he has done excellent things! Let this be known in all the earth!
6
Cry aloud and shout, you inhabitant of Zion; for the Holy One of Israel is great in the midst of you!"
