This happened because they did not listen to the voice of the LORD their God, but violated His covenant—all that Moses the servant of the LORD had commanded—and would neither listen nor obey.
KJV
Because they obeyed not the voice of the LORD their God, but transgressed his covenant, [and] all that Moses the servant of the LORD commanded, and would not hear [them], nor do [them].
ASV
because they obeyed not the voice of Jehovah their God, but transgressed his covenant, even all that Moses the servant of Jehovah commanded, and would not hear it, nor do it.