Behold, God is great, and we know him not, neither can the number of his years be searched out.
God's greatness in heaven and earth: a reason why Job should bow under His afflicting hand.
Know him not - only in part, and afar off (Job 36:25; 1 Corinthians 13:12).
His years - (Psalms 90:2; Psalms 102:24; Psalms 102:27); applied to Jesus Christ (Hebrews 1:12). His infinitude as to duration is the first characteristic of God's greatness noticed.