גּ֤וּרוּ לָכֶ֨ם ׀ מִפְּנֵי־חֶ֗רֶב כִּֽי־חֵ֭מָה עֲוֺנ֣וֹת חָ֑רֶב לְמַ֖עַן תֵּדְע֣וּן שדין [שַׁדּֽוּן׃] (ס)
temei vós a espada; porque o furor traz os castigos da espada, para saberdes que há um juízo.
Rashi
ויגר is an expression signifying fear, as in (Job. 19:29): “Be ye afraid (גורו)" .
Rabbeinu Bahya
A Midrashic approach: “If I were to whet My sword, with a flashing blade, says the Lord, I would destroy the world;” What can I do to prevent this (rhetorical question)? My hand must grasp judgment.” So far the words of the Midrash.
You know already that whenever the “sword” of G’d is mentioned that this is a reference to His attribute of Justice. Examples are Isaiah 66,16: “with His sword against all flesh,” or Psalms 2,21: “save my life from the sword,” and similar verses in which the word חרב is featured. A man is supposed to constantly be conscious of the impending attack by the attribute of Justice. We have a full verse in Job 19,29 where the author cries out: “”be in fear of the sword, for your iniquity is worthy of the sword. Know there is a judgment.” The thrust of the verse is to remind people that what transpires in this universe is not accidental or coincidental, but is part of a master plan.” I have already commented on Genesis 3,24 where the flashing blade of the sword guarding the entrance to Gan Eden is mentioned, as well as on Deut. 7,24, that G’d’s sword is extremely sharp, has 16 blades. When the Torah speaks here of חרבי followed by ותאחז, this is an allusion to the 16-sided blade of G’d’s sword by which the wicked will be judged, and which even the righteous have reason to be afraid of; however, (under the appropriate circumstances) this sword is entrusted to the righteous. This is the meaning of the שיר חדש, the new song which will be sung by them in the future, as we know from Psalms 149,6: “with paeans to G’d in their throats and many-bladed swords in their hands.“ The sages amend the word בידם, “in their hands,“ to be read as בי-ה as referring to 16 blades. [The number 15 i.e. י-ה, may refer to the additional number of blades. Ed.]
You know already that whenever the “sword” of G’d is mentioned that this is a reference to His attribute of Justice. Examples are Isaiah 66,16: “with His sword against all flesh,” or Psalms 2,21: “save my life from the sword,” and similar verses in which the word חרב is featured. A man is supposed to constantly be conscious of the impending attack by the attribute of Justice. We have a full verse in Job 19,29 where the author cries out: “”be in fear of the sword, for your iniquity is worthy of the sword. Know there is a judgment.” The thrust of the verse is to remind people that what transpires in this universe is not accidental or coincidental, but is part of a master plan.” I have already commented on Genesis 3,24 where the flashing blade of the sword guarding the entrance to Gan Eden is mentioned, as well as on Deut. 7,24, that G’d’s sword is extremely sharp, has 16 blades. When the Torah speaks here of חרבי followed by ותאחז, this is an allusion to the 16-sided blade of G’d’s sword by which the wicked will be judged, and which even the righteous have reason to be afraid of; however, (under the appropriate circumstances) this sword is entrusted to the righteous. This is the meaning of the שיר חדש, the new song which will be sung by them in the future, as we know from Psalms 149,6: “with paeans to G’d in their throats and many-bladed swords in their hands.“ The sages amend the word בידם, “in their hands,“ to be read as בי-ה as referring to 16 blades. [The number 15 i.e. י-ה, may refer to the additional number of blades. Ed.]