Is saying, "I ask you by God not to delete this topic, and this is a trust for which I will not forgive you on the Day of Judgment," sufficient to keep a topic that exposes someone?

It is not permissible to ask in the form of "I ask you by Allah" except when asking for Paradise. And he who is asked by Allah must give what is asked, unless it is forbidden or harmful to the one being asked. As for asking not to delete a certain topic, if it involves exposing a Muslim, then it must be covered. And if what is meant by "trust" is keeping a secret, then the trust must be preserved and the secret not disclosed unless its owner permits it or concealing it would lead to harm. However, if what is meant by "trust" is keeping a topic that involves slandering people's honor, then it is not considered a trust and must be deleted.