Be-rǽsan

According to the Old English Dictionary:

be-rǽsan

p. de; pp. ed [be, rǽsan to rush] To rush into; irruere :-- Ðá ðonne hie berǽsaþ on swelce weámódnesse when they then rush into such anger, Past. 40, 5; Hat. MS. 55 a, 25 : Gen. 14, 15. be-ræsan