John 4:23-24 (Amplified Bible)
23A time will come, however, indeed it is already here, when the true (genuine) worshipers will worship the Father in spirit and in truth (reality); for the Father is seeking just such people as these as His worshipers.
24God is a Spirit (a spiritual Being) and those who worship Him must worship Him in spirit and in truth (reality).
Romans 12:1-2 (New Living Translation)
1 And so, dear brothers and sisters, I plead with you to give your bodies to God because of all he has done for you. Let them be a living and holy sacrifice—the kind he will find acceptable. This is truly the way to worship him.
2 Don’t copy the behavior and customs of this world, but let God transform you into a new person by changing the way you think. Then you will learn to know God’s will for you, which is good and pleasing and perfect.
The term worship can often be very confusing at times. Worship to many of us means taking time out to go to church, singing praises to God in hymns and songs of thanksgiving, praying, and listening to the word of God.
Worship can also mean bringing our tithes and offerings to God and making them available for the church to use in His service. Yes, these are ways to worship and express our love for God in recognition for what He has done for us, but as stated in the verses above, to worship means so much more.
Once we become believers, and place our faith in Jesus Christ as the only way for us to be saved(reconciled to God), God's Holy Spirit comes to reside in our hearts(our very being). That is what Paul means when he writes to us in Romans. As Christians, our act of worship requires the daily offering of ourselves in a manner that God would consider holy and pleasing. We are to try to live our lives free from sin, and in reasonable service to God.
Worship must include living every part of our lives as an excercise of our faith (in Spirit), considering God's will and surrendering to the truth of His word in all we do. When we do that, our outer witness will reveal to others what God has done for us.