Melachim Alef 20:11

11 And the Melech Yisroel answered and said, Tell him, Let not khoger (one girding on [his battle armor]) boast himself as he that taketh off.

Melachim Alef 20:11 Meaning and Commentary

Ver. 11 And the king of Israel answered and said
Very mildly and very wisely:

tell him, let not him that girdeth on his harness boast himself as he
that putteth it off;
that is, he that prepares for the battle as he that has got the victory; the sense is, let no man triumph before the battle is over and the victory won; the events of war are uncertain; the battle is not always to the strong.

Melachim Alef 20:11 In-Context

9 Wherefore he said unto the malachim of Ben-Hadad, Tell adoni HaMelech, All that thou didst send for to thy eved at the first I will do; but this thing I may not do. And the malachim departed, and took him back davar.

10 And Ben-Hadad sent unto him, and said, The elohim (g-ds) do so unto me, and more also, if the aphar Shomron shall provide even a handful for kol haAm (each of the people) who are at my raglayim.

11 And the Melech Yisroel answered and said, Tell him, Let not khoger (one girding on [his battle armor]) boast himself as he that taketh off.

12 And it came to pass, when Ben-Hadad heard this davar, as he was drinking, he and the melachim in the sukkot, that he said unto his avadim, Get ready to attack. And they set themselves in array against the Ir.

13 And, hinei, there came one navi unto Ach’av Melech Yisroel, saying, Thus saith Hashem, Hast thou seen all this hamon hagadol (vast multitude)? Hineni, I will deliver it into thine yad this day; and thou shalt know that I am Hashem.