When they first lived there, they did not worship the LORD; so he sent lions among them and they killed some of the people. (NIV)
At the beginning of their dwelling there, they did not fear and revere the Lord. Therefore the Lord sent lions among them, which killed some of them. (AMP)
And so it was at the beginning of their dwelling there, that they feared not the LORD: therefore the LORD sent lions among them, which slew some of them. (KJV)