Hae Woo (not her real name) was imprisoned in a North Korean labor camp for crossing the border into China. The days and nights were torture, she said, with brutal guards, backbreaking work, and little sleep on an ice-cold floor with rats and lice. But God helped her daily, including showing her which prisoners to befriend and share her faith with.

After she was released from the camp and living in South Korea, Woo reflected on her time of imprisonment, saying that Psalm 23 summed up her experience. Although she had been trapped in a dark valley, Jesus was her shepherd…