In an indication of the shifting center of power in television, a broadcast network, NBC, has stepped up to buy the sequel to a hit cable mini-series, “The Bible,” which appeared on the History Channel.

The follow-up series, “A.D.: Beyond the Bible,” will trace the early history of Christianity and again be supervised by the producer Mark Burnett, in partnership with his wife, the actress Roma Downey, NBC announced on Monday.

“The Bible” was the top-rated new series of the year on cable. Its premiere, in March, reached 13 million viewers and its finale attracted 11.7 million, both enormous totals for cable television — or broadcast television, for that matter. In addition, the DVD version of the 10-hour series, which went on sale three months ago, has topped one million in sales, the biggest result for a TV series in five years, NBC said in its announcement of the acquisition.

No financial terms were announced, but History Channel was also seeking to secure the new series, according to one executive familiar with the negotiations. That executive did not want to be identified discussing a private negotiation, but added that NBC is believed to have bid significantly more than History.