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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.