In contrast, we see in Genesis few rules about how the patriarchs worshiped. They did not have a designated priesthood, were not restricted to a certain place, and were told little about what to offer or when to offer it. In the New Testament, we again see little about the how and when of worship. Worship activities are not restricted to a certain group or a certain place. Christ did away with Mosaic requirements and restrictions.
All believers are priests and continually offer themselves as living sacrifices.
Worship, to be acceptable, must be exclusive. God requires all our love, all our allegiance. We cannot serve two Gods. Although we may worship him in different styles, our unity is based on the fact that it is him we worship. In ancient Israel, the rival God was often Baal.