Where the word of a king is, there is power,.... Or "dominion" (z). Authority goes along with his word of command; and there is an inferior magistracy, a subordinate power under him, ready to execute his will upon the rebellious and disobedient. Jarchi interprets it, the word of the holy blessed God; and the Targum, the word of that King who rules over all the world; where his word of doctrine comes, not in word only, it is with power: his written word is quick and powerful; the word of his Gospel preached is the power of God to salvation; or is accompanied with power to enlighten dark minds, quicken dead sinners, unstop deaf ears, soften hard hearts, and deliver men from the slavery of sin and Satan; it makes men, of enemies, friends to God, Christ, and good men; transforms them by the renewing of their minds, and comforts and establishes saints; all which is attributed to the word; and are the effects of almighty power, Hebrews 4:12; his word of command also comes with power, being clothed with his authority; and is submitted to by his people in the day of his power upon them, who readily and cheerfully obey it;
and who may say unto him, what dost thou? call him to an account for, or complain of any of his works of creation, providence, or grace? This best agrees with God than with an earthly king; and is said of him elsewhere, Job 9:12.
(z) "imperium", Montanus, Rambachius; "dominatio", Vatablus, Junius & Tremellius, Piscator, Drusius.

God's very "word" is "power." So the gospel word (Romans 1:16; Hebrews 4:12).
who may say, &c.-- (Job 9:12; Job 33:13; Isaiah 45:9; Daniel 4:35). Scripture does not ascribe such arbitrary power to earthly kings.

"Inasmuch as the word of a king is powerful; and who can say to him: What doest thou?" The same thing is said of God, Job 9:12; Isaiah 45:9; Daniel 4:32, Wisd. 12:12, but also of the king, especially of the unlimited monarch of a despotic state. Baasher verifies as בּשׁ at Ecclesiastes 2:16; cf. Genesis 39:9, Genesis 39:23; Greek, ἐν ᾧ and ἐφ ̓ ᾧ. Burger arbitrarily: quae dixit (דּבּר for דּבר), rex, in ea potestatem habet. The adjectival impers. use of the noun shilton = potestatem habens, is peculiar; in the Talm. and Midrash, shilton, like the Assyr. siltannu,
(Note: Vid., Fried. Delitzsch's Assyr. Stud. p. 129f.)
means the ruler (vid., under Ecclesiastes 5:8). That which now follows is not, as Hitzig supposes, an opposing voice which makes itself heard, but as Ecclesiastes 8:2 is compared with Romans 13:5, so is Ecclesiastes 8:5 with Romans 13:3.