Life has come to be a very serious matter with me.
We are being called upon to deal with a most serious matter.
For our part, we wanted to learn how to live, and that was a much more serious matter.
But perhaps there is a more serious matter at hand.
This is a very serious matter for me, as you will understand after reading the work.
Indeed, all the serious matter in the book is good.
This is a serious matter for us, you must understand.
Her son said his parents let him know that music was a serious matter.
But in that age insurance was a very serious matter.
Of course he saw that this was a serious matter.
