Liverpool overturned a 3-0 defeat in their first leg against Barcelona to qualify for the Champions League final.
Divock Origi opened the scoring for Liverpool tapping from close range in what was unlikely comeback from the Reds.
Substitute Georginio Wijnaldum scored twice in a space of three minutes to tie the two sides on aggregate.
Barcelona failed to respond against Klopp’s side with Messi falling short to score a goal for the visitors.
It was in the 79th minute that Barcelona defense was caught offside by Origi who capitalized on a corner kick giving Liverpool the crucial win.
Liverpool secret to win
Liverpool looked the unlikely side to win against Barcelona but Klopp promised a wonderful display the Reds way.
From the beginning of the game, Liverpool pressed and pushed the ball upfront towards Barcelona causing problems for the Catalans.
It is the second time the home team qualified to the finals even at the absence of Roberto Firmino and Mohammed Salah.
Barcelona suffered their second Champions League qualifier having gone down against Rom last season even though they won the first leg 3-0.