How does Isaiah's call relate to the gospel of grace?

In Isaiah 6, God's call to Isaiah serves as a pivotal moment where grace is revealed through divine initiative. The vision emphasizes Isaiah's unworthiness while simultaneously showing God's redemptive plan — the seraphim cleanses Isaiah's lips, symbolizing the purging of sin. This reflects the essence of the gospel: God taking the first step in reconciliation. Like Isaiah, who was commissioned to proclaim God's message, Christians are given the same charge after experiencing God's grace. Thus, Isaiah's call beautifully foreshadows the work of Christ, where sinners are cleansed and sent out to bear witness to God's saving grace.