from The Century Dictionary and Cyclopedia
- Same as beleave.
Sorry, no etymologies found.
From Thomas More (1557) we find 'and then to not byleve them'; from Thomas Stapleton (1565), 'to flatly gainsaye'.
And in thys blessinge ye beginne with youre hande at the hedde downwarde, and then to the lefte side and byleve that our Lord Jesu Christe came down from the head, that is from the
The king sentë to him then, to byleve  all night,