Arcana Coelestia #3045
3045. 'And the servant put his hand under the thigh of Abraham his master' means that the natural man was bound, as regards its power, to the good of conjugial love. This is clear from what has been stated in 3021, where also the same words occur.
Genesis 35:11
11
God said to him, "I am God Almighty. Be fruitful and multiply. A nation and a company of nations will be from you, and kings will come out of your body.