Romeo believes that if he goes to the party, he will die. This is because he is worried about God’s choices for him. People in Shakespeare’s time strongly believed in these religious things about God deciding people’s fates so that is another reason why Romeo might be unsure of God’s decision for him of that night.
In the first line, Romeo says that his mind misgives information about the party that was to proceed. This is an example of Romeo losing faith.
In the second line, Romeo says “Some consequence yet hanging in the stars”. I think this means that the night that was to happen is planned by fate and Romeo cannot change what is to happen.
React!