Arcana Coelestia # 9153
9153. 'If the thief is not caught' means, if there is no recollection of what has been taken away. This is clear from the meaning of 'if the thief is caught' as, if there is a recollection of what has been taken away, dealt with just above in 9151, at this point no recollection of it since it says 'if he is not caught'.
Deuteronomy 5:31
31
But as for you, stand here by me, and I will tell you all the commandment, and the statutes, and the ordinances, which you shall teach them, that they may do them in the land which I give them to possess it."