Worship in the New Testament church is not simply practice for some later heavenly experience of genuine worship, nor is it simply pretending, or going through some outward activities. It is genuine worship in the presence of God himself, and when we worship we enter before his throne.
This is the reality of new covenant worship: it actually is worship in the presence of God , though we do not now see him with our physical eyes, nor do we see the angels gathered around his throne or the spirits of believers who have gone before and are now worshiping in God's presence. But it is all there, and it is all real, more real and more permanent than the physical creation that we see around us, which will someday be destroyed in the final judgment. And if we believe Scripture to be true, then we must also believe it to be actually true that we ourselves come to that place and join our voices with those already worshiping in heaven whenever we come to God in worship. Our only appropriate response is this: "Let us offer to God acceptable worship, with reverence and awe; for our God is a consuming fire" (Heb. 12:28-29).
Bibliography:
Grudem, Wayne. Systematic Theology. England: Inter-Varsity Press, 1994. (accessed March 21, 2013).