Creating argument to filter multiple NID's in a single filter-criteria I'm having a rather simple Views issue in Drupal 7, Views version 3.11.7

I'm creating a View of Node-teasers so I need to filter it by the desired nodes NID's.

As you could see in the following image, I just typed their numbers but surly nothing happened.

What should I type there that the filter would work?
The "Contextual filter" solution is only needed if you wish to filter your results dynamicly by passing the necessary filters through the URL. 

If I understand your question correctly you wish to filter your view on 4 specific nid's only (witch will never change)? 

In that case you could modify your views filter setup and split into 4 seperate filters (each filtering on 1 nid). In the dropdown menu (where you have the "add" button to add a new filter) you have a config page where you can rearrange your filters and more importantly you can specify conditionals using filter group's. In your case I would create a second filter group for the 4 nid filters and use the "Or" operator between them.