Adopted for Life by Russell Moore is an excellent book! Put it on your wish list for Christmas this year.
Here is a couple of excerpts from Chapter 3 titled Joseph of Nazareth vs. Planned Parenthood
As Joseph images the Father of the fatherless, he shows us how adoption is more than charity, It's spiritual warfare.
(There is a whole section in this chapter on Adoption and Spiritual Warfare. That is something we all need to be aware of. )
When we adopt -- and when we encourage a culture of adoption in our churches and communities -- we're picturing something that's true about God. We, like Jesus, see what our Father is doing and do likewise (John 5:19). And what our Father is doing, it turns out, is fighting for orphans, making them sons and daughters.