Charles H. Spurgeon on Psalms 94:9

That is wise counsel of the Rabbins, that the three best safeguards against falling into sin are to remember, first, that there is an ear which hears everything; secondly, that there is an eye which sees everything; thirdly, that there is a hand which writes everything in the Book of Knowledge, which shall be opened at the Judgment. J. M. Neale.

Verses 9-10. It was no limited power that could make this eye to see, this ear to hear, this heart to understand; and, if that eye which he hath given us, can see all things that are within our prospect, and that ear, that he hath planted, can hear all sounds that are within our compass, and that heart, that he hath given us, can know all matters within the reach of our comprehension; how much more shall the sight, and hearing, and knowledge of that Infinite Spirit, which can admit of no bounds, extend to all the actions and events of all the creatures, that lie open before him that made them! Joseph Hall.