I think this depends on what you mean by 'devout'. If you mean it in the mostly American Evangelical sense, then yes, it might severely hamper your scientific c

I think this depends on what you mean by 'devout'. If you mean it in the mostly American Evangelical sense, then yes, it might severely hamper your scientific career since you will be less open minded about your topics of study. If you look at modern Catholics and many European Evangelics, this is not really the case. Interpreting the bible as a moral guide rather than a presentation of facts makes a big difference. If this weren't the case, you wouldn't see so many physicists and mathematicians to be religious.