The meaning of the New Testament Greek word most often translated “worship” (proskuneo) is “to fall down before” or “bow down before.” Worship is a state (an attitude) of spirit. Since it’s an internal, individual action, it could/should be done most of the time (or all the time) in our lives, regardless of place or situation (John 4:21). Therefore, Christians worship all the time, seven days a week. When Christians formally gather together in worship, still the emphasis should be on individually worshiping the Lord. Even in a congregation, participants need to be aware that they are worshiping God fully on an individual basis.
The nature of Christian worship is from the inside out and has two equally important parts. We must worship “in spirit and in truth” (John 4:23-24). Worshiping in the spirit has nothing to do with our physical posture. It has to do with our innermost being and requires several things.
The second part of true worship is worship “in truth.” All worship is a response to truth, and that which is truth is contained in the Word of God. Jesus said to His Father, “Thy word is truth” (John 17:17b).Psalm 119 says, “Thy law is truth” (v. 142b) and “Thy word is true” (v. 160a). To truly worship God, we must understand who He is and what He has done, and the only place He has fully revealed Himself is in the Bible. Worship is an expression of praise from the depths of our hearts toward a God who is understood through His Word. If we do not have the truth of the Bible, we do not know God and we cannot be truly worshiping.
Since external actions are unimportant in Christian worship, there is no rule regarding whether we should sit, stand, fall down, be quiet, or sing praises loudly while in corporate worship. These things should be decided based on the nature of the congregation. The most important thing is that we worship God in spirit (in our hearts) and in truth (in our minds.)