Any definition of Christian worship must be formulated within the framework of the Trinitarian nature of the faith.
Our worship must be God-centered. This should be obvious, but we often lose sight of it and focus our attention on people. If worship loses its God-centeredness, it ceases to be holy convocation and may become something akin to a common assembly, a rally, a theatrical performance, or an awards ceremony. This is not true worship. People should come away from a worship service with a fresh awareness of the majesty of God, with a desire to glorify God, and with renewed commitment to serve God.
Second, worship must be in Christ, the Son of God, who came into the world and brought salvation to us. Because He is the full revelation of the Godhead and the one way of access to the Father, He must be the focal point of worship. If He is not and we try to worship God without reference to the divine Son of God, then we have failed to follow God’s revelation through to its culmination in the plan of redemption. Believers should come away from a worship service with a renewed assurance of the grace of God through our Lord Jesus Christ, of forgiveness through his blood, of acceptance into his eternal kingdom. And with a fresh commitment to give him the preeminence (Col. 1:18).
Third, because the Holy Spirit is the one who enables all spiritual service, all genuine worship must be by the Spirit. Without falling into the error of denying the physical part of worship, we must recognize that worship is to be spiritual—inspired by by the Spirit, empowered by the Spirit, genuine and life-giving because it flows from the Spirit. And as this happens, the Spirit will not draw attention to Himself but will point to Christ, will not lead into error but into righteousness, and will not produce responses that are foreign or out of harmony with the Word of God but will empower the Word to produce fruit in the lives of the worshippers. When worshippers come away from a service that is truly spiritual, they will come away with zeal to love and serve the Lord. It will not be contrived or forced, and it will not be momentary enthusiasm; rather, the Spirit will continue to work in them to produce godliness.
—Allen P. Ross, Recalling The Hope Of Glory: Biblical Worship From The Garden To The New Creation, 66-67