“God’s purpose was nothing less than the redemption of the world, and here was Jesus telling them that purpose would be accomplished through them! I don’t know about you, but that thought makes me feel incredibly inadequate. God intends to bring about his purposes in the world through us? Amazing! But if you feel unworthy and inadequate, let me give you some encouragement. You are unworthy, and you are most certainly inadequate! How’s that for encouragement? Look at us—frail, weak human beings who still struggle against sin every day of our lives. And yet Jesus says to us, “You will be my witnesses.” It is through our proclaiming the gospel—whether through preaching or teaching or conversations over meals with friends, family members, and coworkers–that God has determined to save sinners.”
Greg Gilbert on Luke 24:46-48 from What is the Gospel?