The LORD is in his holy temple, the LORD's throne is in heaven: his eyes behold, his eyelids try, the children of men.
The reply of the righteous.
The Lord (is) in his holy temple - i:e., in heaven. The holiness of His abode shows His will to take cognizance of all that is holy and unholy on earth.
The Lord's throne is in heaven. The majesty of His exalted abode shows His power to do so. Compare Psalms 102:19-20, "From heaven did the Lord behold the earth; to hear the groaning of the prisoner."
His eyes behold, his eyelids try, the children of men. This thought of faith keeps the godly from despair. His piercing glance searches out every act, word, and thought of the ungodly; their seeming impunity is only temporary: at last they must pay the full penalty of their wickedness. The Septuagint and Vulgate read, 'His eyes behold the poor' [`aanaay, which may have slipped out, after the similar word `eeynaayw (H5869)]. No Hebrew manuscript supports this.