2 Corinthians 5:20 So we are Christ's ambassadors; God is making his appeal through us. We speak for Christ when we plead, "Come back to God."
When we feel the need to tell someone to come back to God, God will be with us, he will be with our words. When we think, "Bit I just met this person." We may have been placed in their lives for such a time is this. So often, most often people don't hear their own families. So we need to take those opportunities when they are placed in our lives. Would we want so one that could reach our families to walk away if there was a chance they would be the person our families would hear? Remember God never ask us to do something that he does not give us the tools for. Also we should never be discouraged, we may be one piece to an unfinished puzzle that is getting someone right where they need to be.