This is part of the Haftarah for parshas Lech L’cha. The Radak explains this verse as follows: G-d created the whole world, so He certainly supervises what goes on in it. One might think that He doesn’t immediately punish evildoers because being G-d is a big job and one simply can’t do everything. Not so! He has no limits, being by nature untiring. So why doesn’t G-d simply smite all the wrongdoers? We cannot say for sure, because His ways are ultimately beyond our comprehension.