phrase

Singing from the same hymn sheet:

 If people are singing from the same hymn sheet, they are expressing the same opinions in public.

example :  almost all of Indonesia singing from the same hymn sheet about Nazarudin recent case

Talk the talk, walk the walk:
you say you can do something, you can do what you say you can do

example :  if you’re going to talk the talk, you’ve got to walk the walk 

actions speak louder than words' and 'practice what you preach

The elephant in the room:
the expression "elephant in the room" refers to a situation where something major is going on, it's on everyone's mind and impossible to ignore -- like an elephant in the room. But nobody talks about the "elephant" because nobody knows what to do about it.

example :  Uncle Nimrod is busily getting drunk again at the family Thanks giving dinner. There's going to be a drunken scene. But everyone feels powerless and choses to ignore his behavior.

All hands on deck:

 Something that you say when everyone's help is needed, especially to do a lot of work in a short amount of time

example : keep all hands on deck now they're here.