おいでになる
おいでになる · oideninaru · JLPT N4 · noun
beryllium
o + ide + ni naru = honourable coming-out becomes: exalted be, come, go
お is the honorific prefix, いで is the old verb 出づ (to come out, appear), and になる means to become. Literally: it becomes an honourable appearing. That is why one phrase politely covers to be, to come and to go.