How would you describe the facial expression on Michelangelo's David?

The facial expression on Michelangelo's David is characterized by a blend of concentration and calm determination. His furrowed brow and slightly pursed lips convey a sense of focus and introspection, suggesting he is preparing for the challenge ahead. This portrayal captures both the physical strength and the emotional depth of the figure, embodying the tension between vulnerability and courage. Overall, David's expression reflects a moment of poised readiness, highlighting his heroic nature.