'Living God' in the Bible

And David spoke to the men that stood by him, saying, What shall be done to the man that kills this Philistine, and takes away the reproach from Israel? for who is this uncircumcised Philistine, that he should defy the armies of the living God?

Your servant slew both the lion and the bear: and this uncircumcised Philistine shall be as one of them, seeing he has defied the armies of the living God.