The doctrine of interposition is based on the biblical truth that the powers that be, the rulers of civil government, are ordained by God and are His ministers (see Romans 13:1-10 for this and the discussion which follows). As God’s ministers they are to serve Him—not anyone else. They are to serve Him by protecting and giving praise to those who do good, and by punishing, and therefore restraining, those who do evil. As God’s ministers they must follow, obey, and apply His definitions or standards of what is good and what is evil: not their own, nor anyone else’s definitions or standards of good and evil.
Now, all the rulers of civil government — no matter what their level or scope of authority — are ordained by God to be His ministers. All the officials of civil government, not only the highest one or ones, are obligated to serve God rather than men, and to obey and apply God’s standards of good and evil in order to protect those who do good and restrain, by punishing, those who do evil.
Read the article