Where the word of a king is, there is power: and who may say unto him, What doest thou? Where the word of a (the) king (is, there is) power. God's very "Word" is "power." So the Gospel Word (Romans 1:16; Hebrews 4:12). Maurer translates (Baasher), 'Because that the word of the King is powerful.'
Who may say unto him - none is of higher authority, so as to call him to account (Job 9:12; Isaiah 45:9; Daniel 4:32; Jonah 1:14). Scripture does not ascribe such arbitrary power to earthly kings.