The phrase "important duty of" is grammatically correct and can be used in written English.
It is typically used to describe a responsibility or obligation that is considered significant or essential. Example: "It is the important duty of every citizen to vote in the upcoming election."
Maintaining that mission is, quite literally, the first and most important duty of its CEO.
The most important duty of the Federal Reserve is to preserve the health of the banking system.
Once an important duty of bishops, instruction was more often left to the parents or parish priests.
Lieutenant Fowler assisted the commodore with his professional advice in this action, and Franklin performed the important duty of signal midshipman.
"The way the Labour leader has answered that question undermines our deterrent and demonstrates that Labour can't be trusted with our national security, which after all is the most important duty of government".
She has sometimes been slow to respond to national disasters, though she has paid countless encouraging visits to schools, hospitals and charities.Could have tried harderOf course, the most important duty of any monarch is to produce an heir.
One of the important duties of an Aztec priest centred on the maintenance of the sacred fire, making sure that it would burn perpetually.
He was, he said, incredulous that "after years of litigation over $2, the majority will impose on a busy judge to conduct a trial on this silly thing, and require a panel of jurors to set aside their more important duties of family and business in order to decide it".
Only Joseph Johnson's advance on her first book, Thoughts on the Education of Daughters: with Reflections on Female Conduct in the more important Duties of Life (1787) helped ease her considerable financial difficulties.
The church teaches that procreation is one of the most important duties of married couples.
Hiring a schools chief is one of the most important duties of an elected board of education.
