What is the meaning of rebuke in this sentence May God him?

The sentence "May God him?" is incomplete and doesn't make sense on its own. It seems like you're missing a verb, such as "rebuke" or "bless."

To answer your question, "rebuke" means to criticize someone sharply for something they've done wrong.

Here's how the sentence would look if it were complete and used "rebuke":

May God rebuke him?

This sentence implies that the speaker is asking for God to criticize someone for their actions.

It's important to note that "rebuke" carries a strong and often negative connotation, suggesting disapproval and a desire for consequences.