'Uncircumcised' in the Bible

Jonathan told his armor bearer, "Come, let's go over to the garrison of these uncircumcised ones. Perhaps the LORD will work for us, since nothing prevents the LORD from delivering, whether by many or by a few."

David asked the men who were standing by him, "What will be done for the man who kills this Philistine and takes away the reproach from Israel? Indeed, who is this uncircumcised Philistine that he should defy the armies of the living God?"

Your servant has struck down both lions and bears, and this uncircumcised Philistine will be like one of them, since he defied the armies of the living God."

Saul told his armor bearer, "Draw your sword and run me through with it, or these uncircumcised people will come and run me through and make sport of me." But his armor bearer did not want to do it because he was very frightened, so Saul took the sword and fell on it.