'Helpful' in the Bible

Everything is permissible for me, but not everything is helpful. Everything is permissible for me, but I will not allow anything to control me.

Everything is permissible, but not everything is helpful. Everything is permissible, but not everything builds up.

I am giving you my opinion on this matter because it will be helpful to you. Last year you were not only willing to do something, but had already started to do it.

This saying is trustworthy. I want you to insist on these things, so that those who have put their faith in God may devote themselves to good actions. These things are good and helpful to other people.