'May' in the Bible

But let endurance have its perfect work, that ye may be perfect and complete, lacking in nothing.

Behold, we put the bits in the mouths of the horses, that they may obey us, and we turn round their whole bodies.

Ye ask and receive not, because ye ask evilly, that ye may consume it in your pleasures.

Confess therefore your offences to one another, and pray for one another, that ye may be healed. The fervent supplication of the righteous man has much power.