(CNN) Sen. Bernie Sanders, who has mounted his campaign on the premise of rejecting the establishment, has released a new ad that features former President Barack Obama.

The ad, which is scheduled to air in several upcoming primary states, features audio and video of Obama strung together from several different settings in which the 44th president said kind things about Sanders.

It is the first time Sanders and his campaign have made a concerted effort to embrace Obama. Former Vice President Joe Biden , Sanders' top competitor for the Democratic presidential nomination, has frequently highlighted his close relationship with Obama in his appeal to voters.

"Bernie is somebody who has the virtue of saying exactly what he believes," Obama says in the ad. "Great authenticity, great passion, and is fearless."