Facebook CEO Marc Zuckerberg in a post-Yom Kippur message on his social network asked forgiveness for the misuse of Facebook in the past year.

He posted Saturday night on his personal Facebook account: “Tonight concludes Yom Kippur, the holiest day of the year for Jews when we reflect on the past year and ask forgiveness for our mistakes. For those I hurt this year, I ask forgiveness and I will try to be better. For the ways my work was used to divide people rather than bring us together, I ask forgiveness and I will work to do better. May we all be better in the year ahead, and may you all be inscribed in the book of life.”

Although Zuckerberg did not specify which misuse he was referring to, Facebook earlier this month turned over more than 3,000 Russia-linked ads to congressional committees investigating the Kremlin’s influence operation during the 2016 presidential campaign. The handover of the ads came after months of denial by Zuckerberg that Facebook played any role in influencing U.S. voters.

“I care deeply about the democratic process and protecting its integrity,” Facebook’s chief executive, Mark Zuckerberg, said at the time in an appearance on Facebook Live, the company’s video service. He added that he did not want anyone “to use our tools to undermine democracy.”

“That’s not what we stand for,” he said.

In addition, an investigative news website recently discovered that it was possible to target ads at Facebook users who expressed interest in subjects such as “Jew hater” and “how to burn Jews.” Facebook removed the categories after being alerted to their existence and said it would seek to prevent such categories from popping up for potential advertisers.