Author Stephen Coston notes--
"With respect to the doctrine of the Divine Right of Kings, this doctrine was the principal force restraining the authority of the Popes in James' time and thereafter...[W]ithout the doctrine of the Divine Right, Roman Catholicism would have dominated history well beyond its current employment in the Dark Ages.
(Some - but far from all - adherents of the Divine Right of Kings also maintained the principle of indefeasible hereditary right: i.e. the belief that while the legitimate heir to the crown is alive it is wrong to swear allegiance to any other ruler, even one actually in possession of power).
Divine Right of Kings - TV Tropes
God giues not Kings the style of Gods in vaine, For on his throne his Scepter do they swey: and as their subjects ought them to obey, Kings should feare and serve their god againIf then ye would enjoy a happie raigne, Obserue the Statutes of your Heauenly King; and from his lawe, make all your Lawes to spring: Since his Lieutenant heare ye should remaine, Reward the iust, be steadfast, true, and plaine: Represse the proud, maintaining ay the right, Walke alwaies so, as euer in his sightWho guardes the godly, plaging the prophane, And so ye shall in princely vertues shine.