Numbers 23:21

One does not see evildoers in Yaakov. As Targum [Onkelos] renders. Another interpretation: By following its plain meaning, it may be expounded beautifully. The Holy One, Blessed is He, does not look at the evil in Yaakov. When they transgress His commandments, He does not pursue them exactingly by reflecting on the wickedness and wrongdoing of their violation of His doctrines.

Transgression. The word [עמל, (lit. tediousness)] denotes sin, as in “sin conceives,” “for you observe sinful and infuriating behaviour.” Because sinfulness is tedious before the Omnipresent.

Adonoy, his God, is with him. Even when they anger Him and are rebellious, He does not leave them.

He has the King’s friendship. The word denotes affection and friendship, like “David’s comrade” — one who loves David, “and he gave it to his fellow.” Similarly, Onkelos renders “the King’s Presence is among them.”

Bileam the wicked said, I see not among them of the house of Jakob such as worship idols: they who serve false idols are not established among the tribes of the sons of Israel. The Word of the Lord their God is their help, and the trumpets of the King Meshiha resound among them:

HE HATH NOT BEHELD ‘AVEN’ (INIQUITY) IN JACOB. It [the pronoun “He”] refers to “G-d” mentioned [in Verse 19. G-d is not a man, that He should lie, and not to Balaam, who is referred to in Verse 20: Behold, I am bidden to bless], the verse stating that G-d has not beheld iniquity and falsehood in Jacob, nor has He seen in them anything perverse or any provocation that they have committed before Him, and therefore He is with them, and the shout of His Kingdom is among them, for He will cry, yea, He will shout aloud, He will prove Himself mighty against their enemies. This is the opinion of Rabbi Abraham ibn Ezra, and it is correct.
It is also possible to explain that the usage of the word aven here is like [that in the verse], I see the tents of Cushan under ‘aven’ (falsehood). So also the word amal [in the verse before us: neither hath He seen ‘amal’ in Israel — denotes “deception”]. Similarly, under his tongue is ‘amal v’aven’ — meaning “deception and falsehood,” for a thing which will not happen and will not come to pass because it is false, is called aven v’amal [meaning: “trouble and toil”], because a person will only derive from it toil. Balaam is thus stating: “Behold, I am bidden to bless; and when He hath blessed, I cannot call it back, for no man hath beheld in Jacob nor hath anyone seen in Israel any deceit or falsehood. Their Trust is not false. And their hope of Him is not in vain for all their blessings and their confidence will exist forever.” [The usage of the word hibit in the verse before us: lo ‘hibit’ aven b’Ya’akov] is similar in expression to: behold, such is ‘mabateinu’ (our expectation); and they shall be dismayed and ashamed, because of Ethiopia ‘mabatam’ (their expectation), Verse 5. — [thus making the meaning of the verse here to be: “the trust and expectation of Jacob will not end in trouble and sorrow”]. So also ‘v’lo hibatetem’ (but ye looked not) unto Him that hath done this, neither had ye respect unto Him that fashioned it long ago,, 22:11. [where the word hibatetem is] an expression of trust and hope [thus the verse is saying: “you trusted not in Him, nor did you hope in Him”].
Balaam states the reason for this, saying: because the Eternal his G-d is with him, Who does not lie nor repent, and the shout of a mighty King is among them, Who will never be vanquished. For by bringing them forth out of Egypt He has [shown] His great might, like the lofty horns of the wild-ox which are above all animals. And so it is not possible that all their blessings should not be fulfilled, seeing that there is no enchantment or divination in Israel!

לא הביט און ביעקב, He does not want to punish them even when they commit sins (in error). His is what is meant in Job 11,11: “when He sees iniquity He does not discern it.”

ותרועת מלך בו, from the word ריע, companion, as in Proverbs 18,24 איש רעים להתרועע, “there are friends to keep one company.”

ותרועת מלך בו, whenever the whole camp begins to journey or to make camp they blow the trumpets to express the joy of having their King with them.