We all need a place to come home to. Welcome those who return with open arms. Do NOT quiz them with a barrage of questions that would send them running away again. Remember, a hug or a warm handshake can mean more that spoken words. Many former members have been hurt, often deeply.
Wounds take time to heal.
It doesn't happen overnight. In small groups, like home fellowships, healing can take place. Send out personal invitations to the homes surrounding your church. This will sometimes awaken the interest of a former member and encourage them to visit and check out the church again. Pastors and church leaders, trained in visitation, need to take these names seriously.