REPETITION FOR EMPHASIS

The repeating of a whole sentence achieves repetition for general emphasis.  This has a better and more immediate impact if the repeated sentence is short rather than too lengthy.

That was not welcome.

That was no welcome.

Rather than:

The welcome given by the footman at the door was very lukewarm.

The welcome given by the footman at the door was very lukewarm.

‘Short’ adds to impact for the listener.