E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Reed Shaken by the Wind (A),
in Bible language, means a person blown about by every wind of doctrine. John the Baptist (said Christ) was not a reed shaken by the wind, but from the very first had a firm belief in the Messiahship of the Son of Mary, and this conviction was not shaken by fear or favour.