"Why do you need more children?" their families asked. "We don't," they answered, "but maybe these children need a family." Terssa and Doug Markworth have twenty-one kids. Some share their DNA, but most are adopted foster children. All are equally cherished. The challenges of family life were multiplied, sometimes to the point of despairing as to whether they as parents were making a difference in anyone's life, but so too were the uncountable joys. They taught every child about Jesus and the Bible and ultimately had to leave the decision of salvation for each to make on his or her own. Of...