Arcana Coelestia #2221
2221. That 'Abraham went with them' means that the Lord still remained with them in perception, but perception regarding the human race, becomes clear from the train of thought in the internal sense, for 'going with the three men', that is, with Jehovah, is having perception still.
Stumble
In Matthew 5:29 and Isaiah 3:8, this signifies to change truth into falsities, and to fall thereby.
In Isaiah 8:14, this refers to people who should teach truths from the Word but instead teach falsities. (Apocalypse Explained 624)
To 'stumble' denotes being scandalized or offended, and falling, as a result, from truths into falsities.
(सन्दर्भ: Arcana Coelestia 9163)