Acclaimed Christian folk band for King & Country put out a version of "By Our Love" for the A.D. series, and it can be heard brielfy in the show's new trailer.

"We are very excited to share this music video inspired by our new television series A.D. with you this Christmas. For KING and COUNTRY's powerful rendition of "By Our Love" reminds us this it is through love that Jesus changed the world," Roma Downey said according to JesusFreakHideout. "During this Christmas season we rejoice in how God brought His compassion for all humanity and launched a revolution of love that has transformed the lives of generations. This Easter on NBC, A.D. will tell that story again to the entire world."
Watch the trailer below: