I need to concentrate on 'the task at hand'. [=the work I'm doing right now]
They appointed a 'task force' to review the situation.
This is not an easy 'task'. = This is 'no easy task'.
(..) Ellisif? I came to forgive you. It is not your fault you could not wait for me. You probably thought it was an impossible task you had set me, in any case. I was never supposed to achieve it. You never really intended to marry me, did you? I'm sorry. (..)2017 TvShow: Vikings Title: On the Eve Season: 4 Episode 19