'Saying' in the Bible

It is a true saying, in which all may put their faith, that Christ Jesus came into the world to give salvation to sinners, of whom I am the chief:

This is a true saying, A man desiring the position of a Bishop has a desire for a good work.

Women are to be serious in behaviour, saying no evil of others, controlling themselves, true in all things.

This is a true saying, in which all may put their faith.

And they get into the way of doing no work, going about from house to house; and not only doing no work, but talking foolishly, being over-interested in the business of others, saying things which they have no right to say.