Remember, man, that we are dust (Gn 3:19), and we tend to pick up dust as we struggle through life. As we announce the good news of God's kingdom, we are often rejected and persecuted. We naturally feel resentment, discouragement, and unforgiveness. However, we must shake off this lethal dust, or we will no longer be able to serve in God's kingdom.
Through forgiveness and healing, we let the Lord dust us off. For instance, Joseph was almost murdered by his brothers. They eventually sold him into slavery. Next, Joseph was falsely accused of rape, for which he was sentenced to years in prison. After thirteen years of slavery and prison, Joseph would naturally be very dusty — even encrusted with dust. Miraculously, however, Joseph forgave his brothers (see Gn 45:5) and many others. He was dusted, clean, healed, and victorious.
Jesus hung on the cross covered with dust and grime. But inside, He was clean, innocent, and spotless. He even prayed: "Father, forgive them; they do not know what they are doing" (Lk 23:34).
The Lord wants to dust you. Go to Confession, forgive, shake the dust off, and be free.