Behold, God is great, and we know him not - That is, we cannot fully comprehend him; see the notes at Job 11:7-9.
Neither can the number of his years be searched out - That is, he is eternal. The object of what is said here is to impress the mind with a sense of the greatness of God, and with the folly of attempting fully to comprehend the reason of what he does. Man is of a few days, and it is presumption in him to sit in judgment on the doings of one who is from eternity. We may here remark that the doctrine that there is an Eternal Being presiding over the universe, was a doctrine fully held by the speakers in this book - a doctrine far in advance of all that philosophy ever taught, and which was unknown for ages in the lands on which the light of revelation never shone.