Literally, “sinning thy soul.” We have in Proverbs 8:36, [הטאי], “my sinner,” rendered no doubt correctly, “he that sinneth against me.” So here “sinning thy soul,” means “sinning against thy soul.”
See the same words in Proverbs 20:2. In Numbers 16:38, the preposition [ב] is before “souls.” “Thy soul hath sinned,” as given by the Septuagint, and
adopted by Newcome, does not convey the meaning; for to sin against our souls, is to injure ourselves so as to bring down judgment, as in the case mentioned in Numbers 16:38, while the other phrase conveys only the idea of doing what is wrong.—Ed.