He heals the brokenhearted and bandages their wounds.

 - Psalm 147:3

Wounds are no longer visible to others when they heal. However, the memories and emotions remain. Without knowing, our words can sting vulnerable spots where wounds have previously healed. We should always try hard to be mindful and encouraging. In other words, master the art of exhortation. Encourage others today, and remember that God heals your wounds if you so accept.