Psa 40:5 KJV Many, O LORD my God, are thy wonderful works which thou hast done, and thy thoughts which are to us-ward: they cannot be reckoned up in order unto thee: if I would declare and speak of them, they are more than can be numbered.
If someone finds a verse in Psalms that is longer than that, then please let me know. Other than the longest verse of course, Psa 17:14.
I have used the King James Version for this. I have no idea if any other translation, or the Hebrew, would yield a different result.