One of my favorite quotes on adoption is by J.I. Packer (whose three children are adopted). He writes in Knowing God, "Our understanding of Christianity cannot be better than our grasp of adoption" (p. 202).
There are 34 million orphans in the world right now. Consider what you might do to obey this verse:
Religion that is pure and undefiled before God and the Father is this: to visit orphans and widows in their affliction, and to keep oneself unstained from the world. (James 1:27)