Church teaches that temple ordinances should not be talked about.
"Temple Endowment Q&A," Liahona (March 2019); accessed Oct. 27, 2021
There are many aspects, including temple covenants, that we can and should talk about before we go to the temple for the first time. There are some aspects, specific to the ordinances, that we discuss only in the temple. Temple ordinances and ceremonies are personal and sacred, and part of what makes them special is how reverent, reserved, and careful we are in discussing them.