Vrftsjtryk

I'm leading the Agile team with a flat structure and we recently got a new team member. He is 10 years older than me and more experienced in some things (emotional intelligence) and he is local in a country where I work, I'm expatriate here. No matter what, I'm leader of the team and have responsibility. After several weeks, after he joined, we had escalation about team readiness to deliver one small project where almost every team member was involved. He didn't work on that project but during his interview with my manager, before he was hired, it was agreed that he will take ownership of similar projects. As we had a couple of days left before the small project has to be delivered, I sent email to our developers and asked about individual status apart from that I wrote the following to our new employee in that email:

"John, according to my conversation with Chris, he asked you to take ownership in organizing project delivery of the [small project name] and we need your help in this space to double-confirm that everything is ready. You can work on organizational details with our [scrum muster name] and business [stakeholder name] and double-check individual development status with [individual developers names]".

I sent this a couple of hours before the working day started, and when I reached the office he asked for a chat with me and told me that I should not give public orders but had to have an individual discussion with him to agree on this work. I told him that I didn't mean that and apologized and explained my intentions with pressure coming from the above. After that, I read my email again but still cannot get to the point if it was really that wrong. Of course, I will try to be sensitive to this going further but can anyone explain to me what I did wrong here?