10660. 'All that opens the womb is Mine' means that all the good of innocence, charity, and faith is to be ascribed to the Lord. This is clear from the meaning of 'that which opens the womb' as that which is born from the Lord; for a person is conceived and born from parents in a natural manner, but from the Lord in a spiritual one. This birth from Him is what should be understood in the internal sense by 'that which opens the womb'. If such were not meant what would be the point of the law that the firstborn of cattle were to be Jehovah's, that is, the Lord's? Furthermore the person who is being regenerated is conceived, born, and brought up anew, and in this manner is led away from the evils of the natural condition which he acquired from his parents. The subject here is the firstborn of cattle; but by cattle the forms of good and the truths that reside with a person should be understood. For cattle of every kind correspond to affections such as exist in the human being, as becomes clear from the places referred to in 9280. From these it becomes clear that 'that which opens the womb, which is Jehovah's' means the good of innocence, charity, and faith, which are imparted by the Lord to those who are born anew, that is, who are being regenerated. It is said that these are to be ascribed to the Lord, that is, it should be acknowledged that they come from Him; for unless people acknowledge and believe that they come from the Lord they are not forms of good. All good comes from Him, and what does not come from Him comes from man; and whatever comes from man, though it seems to outward appearance to be good, is nevertheless bad. For the human proprium is nothing but evil, and from what is bad no good can be brought forth.

Finding, or being found, can have different meanings in the Word, depending on the context. Here are two examples:

From Arcana Coelestia 5756, 'Behold, the silver which we found in the mouth of our pouches' means when truth freely given.

In Revelation 18:21, we find this: "And one strong angel took up a stone like a great millstone, and cast it into the sea, saying, Thus with violence shall that great city Babylon be cast down, and shall not be found any more." Here, "to not to be found any more," signifies not to rise again, according to Apocalypse Explained 1183.