Be-warenian

According to the Old English Dictionary:

-warnian;

be-warenian

p. ode; pp. od To guard, beware; custodire, cavere :-- He wel ne bewarenaþ wið ða unþeáwas he does not well guard against the vices, Bt. Met. Fox 16, 45; Met. 16, 23. Ða ðe hie wið ða læssan scylda bewareniaþ those who guard themselves against the lesser sins, Past. 57, 1; Hat. MS. be-warenian