The phrase "to fulfil the prophecy" means to make something happen or come true, when it was predicted or foretold beforehand by someone. Full definition
If the consumer doesn't believe that the economic and employment expansion we are seeing is built to last, it could become a self fulfilling prophecy driven by sluggish consumer spending. (fortune.com)
It's a self - fulfilling prophecy in which we are our own worst enemy. (tonyrobbins.com)
If he did not fulfill this prophecy, what else did He not fulfill? (redeeminggod.com)