Wisdom is knowing how to handle a situation. It is insight, and therefore knowing the solution. God is wisdom. He knows how to solve our biggest problem. Our biggest problem is sin. God’s way of saving sinners is what no one had imagined (see 1 Corinthians 2:9). The cross is God’s solution. It is his wisdom.
28 And all Israel heard of the judgment that the king had rendered, and they stood in awe of the king, because they perceived that the wisdom of God was in him to do justice.