1 Samuel 21:11

And the servants of Achish said unto him
Who knew who David was, and perceiving that he was respected by Achish:

[is] not this David the king of the land?
of the land of the Philistines; so some render the words, "the king of this land" ^F17; which belongs unto him for his conquest of Goliath; for this was what was proposed by him, that whoever was the conqueror should possess the kingdom; and seeing it belongs to him, O Achish, why dost thou admit him to court? thou wilt be driven from the throne, and we shall be his servants, and not thine ^F18: but rather they mean the king of the land of Israel, having heard that he was anointed king by Samuel, and was to succeed Saul; or rather, they called him so because he led out the armies of Israel as their general, and being victorious was more respected than even Saul was; for they had heard what the women sung in their songs as follows:

did they not sing one to another of him in dances, saying, Saul hath
slain his thousands, and David his ten thousands?
which are the burden of their song, ( 1 Samuel 18:7 ) ; and from whence the servants of Achish concluded, that he was in greater authority or honour, and in greater esteem than Saul their king was.