Numbers 23:24

Behold, a people that rises like a young lion, etc. When they rise from their slumber in the morning, they are as vigorous as the young lion and the lion, to snatch the mitzvos wearing a Tallis, reading the Shema, and putting on the Tefillin.

He does not lie down. At night on his bed until he consumes and destroys every harmful spirit which comes to attack him. How is this? He reads the bedtime Shema, and entrusts his soul in the hand of the Omnipresent. If a corps or army comes to attack them, the Holy One, Blessed is He, protects them — and fights their battles, and strikes them (the attackers) dead. Another interpretation of “behold, a people rises like a lion, etc.,” is as Targum [Onkelos] renders.

And drinks the blood of its kill. He prophesied that Moshe would not die until he would strike the Midianite kings dead, and he (Bil’am) would be killed with them, as it is said, “and Bil’am the son of Beor, the sorcerer, the Bnei Yisroel killed by the sword, with the others whom they killed.”

This people reposeth alone, and dwelleth strong as a lion, and reareth himself as an old lion. They sleep not till with great slaughter they have slain their adversaries, and taken the spoils of the slain.

Behold, a people that rises like a young lion. This is a hint that they will conquer the Canaanite kings in a similar way, for example, as their victory against Midian which was unheard of. Not a single person from Israel was lost, five kings were killed, and the number of women captives who had not had relations with a man was thirty-two thousand.

And drinks the blood of its kill. The entire army and all the spoils. This verse could also be interpreted as: Moshe does not lie down until he devours his prey. Similarly, the verse says (31:2), Take revenge for Bnei Yisroel against the Midianites, afterwards, you shall be gathered to your people (die).

Balaam prophesied also about them [Israel] that he will rise up ‘k’lavi,’ which is the lion’s whelp, and afterwards he will lift himself up like a [fully-grown] lion, and he will not rest in his Land until he eat of the prey, and drink the blood of the kings of Canaan, as Onkelos explained it.
Thus Balaam added now in this second prophecy [to the words of his first prophecy], telling Balak that they [the Israelites] would conquer the Land and kill mighty kings. Now Balak knew that the Israelites would not receive his land as an inheritance, and therefore although Balaam told them now that the Israelites would ultimately conquer the kings of Canaan, Balak still wanted [Balaam] to curse them so that [Balak] would be victorious [over them], and that he would be able to overcome them, and possibly he could fight against them and inflict losses on them. Therefore he still said, [Come now], I will take thee unto another place; peradventure it will please G-d that thou mayest curse me them from thence. Balak did not [ask Balaam] to withdraw the blessing [which he had previously given Israel], since he had already informed him, G-d is not a man, that He should lie, neither the son of man, that He should repent, but he thought: “Indeed the Israelites are destined to conquer the land of Canaan, which is their inheritance, and to kill their kings; but it is still possible that I will prevail over them and inflict losses on them, as did the Amalekite and the Canaanite who dwelt in that hill-country, who smote them even unto Hormah.” Balak intended to do this because of his fear of them, as he mentioned to the elders of Midian,, 22:3-4. or it may be that his purpose was that he should be able to reconquer all [that land] which the Israelites had captured from the possession of Sihon which originally belonged to Moab, as is stated explicitly in the words of Jephthah. I have already mentioned this.

כלביא יקום, in order to go to battle against those who have not attacked them at all.

עד יאכל טרף, they will consume and destroy those nations who from now on will be like prey in their teeth.

הן עם כלביא יקום, “they are a people that rises like a lioness;” Bileam tells Balak that far from being humiliated, this nation will rise to greater heights, as do lions.”