Circumcision was a duty incumbent as to the letter of the commandment; but there was also doctrine in it, as to a more high and spiritual teaching than the letter simply imported.
That a father has a right to be obeyed by his children only means that it is a duty incumbent on his children to obey him.
That a right belonging to A is not merely a duty incumbent on B, but a duty to A incumbent on B, will become evident from an example.
Honourable Sir, "I take it as a duty incumbent on me to acquaint you that his majesty's ship the Wager was wrecked on a desolate island on the coast of Patagonia, in the latitude of 47 00 S.
And unto those who are divorced, a reasonable provision is also due; this is a duty incumbent on those who fear God.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "duty incumbent" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.