'bade' (past of 'bid') ultimately originates from Old English: it reflects forms of two related verbs—Old English 'biddan' (to request, ask) and Old English 'bēodan' (to proclaim, command/offer).

'biddan' and 'bēodan' in Old English developed through Middle English (various past forms such as 'bād' / 'bade') and converged into the modern verbs 'bid' with past form 'bade' (and variant pasts like 'bid' or past participle 'bidden').

Initially meanings covered 'to ask/request' (from 'biddan') and 'to command/offer' (from 'bēodan'); over time these senses overlapped in English, leaving 'bade' as a historical/past form used for commanding, inviting, saying goodbye, or offering a bid.