How has the Lord revealed Himself to you and how many revelations has it taken for you to give Him your all? Take time today to thank Him for His gracious mercy in not giving up on you when you didn't respond to His first revelation. Then remember that the same mercy is available to each and every person you encounter, so if they haven't responded in the past, they might still respond to the next revelation. So go ahead and invite that person to your church service, to the retreat, to the evangelistic opportunity which you doubt they'll respond to. Don't give up hope, for Christ hasn't. Just do your part and let Him be concerned with their hearts.