Must have hit the wrong key. I meant to say that I have a textbook which gives the past tense of "beir" as "rug". The future is "beiridh" in the affirmative and "cha bheir" in the negative. "Bheir" by itself is given as the future tense of "thoir", meaning give, take, or bring. (Negative cha toir.) Therefore if "Bheir mi O" meant anything it would be something like "I will bring from".