Why is faith not a work that we do?

In the context of Reformed theology, faith is understood as a work of grace rather than a work of man. This distinction is crucial because it highlights that faith does not originate from human striving or decision-making. Instead, it is a response to God's command and initiative, as He breathes life into the dead heart, enabling it to believe. Salvation is wholly of the Lord, and when He commands, His people believe. Thus, believing should not be seen as a human action that merits salvation, but as a divine response to God's gracious call to faith.