'Unawares' in the Bible

but if by the finger of God I cast forth the demons, then come unawares upon you did the reign of God.

and that because of the false brethren brought in unawares, who did come in privily to spy out our liberty that we have in Christ Jesus, that us they might bring under bondage,

of the hospitality be not forgetful, for through this unawares certain did entertain messengers;