Traditional:
> Our Father, who art in heaven, hallowed be thy name. Thy kingdom come, thy will be done, on earth as it is in heaven. Give us this day our daily bread. And forgive us our trespasses, as we forgive those who trespass against us. And lead us not into temptation, but deliver us from evil. For thine is the kingdom, and the power, and the glory, for ever and ever. Amen.
Modern:
> Our Father in heaven, hallowed be your name. Your kingdom come, your will be done, on earth as it is in heaven. Give us today our daily bread. And forgive us our debts, as we also have forgiven our debtors. And lead us not into temptation, but deliver us from the evil one. For yours is the kingdom and the power and the glory forever and ever. Amen.
Both versions are correct and accepted. The traditional version uses older, more formal language, while the modern version uses more contemporary language.