God is spirit, and his worshipers must worship him in spirit and in truth. —John 4:24.
Genuine worship is a gift. God is spirit. God is holy. So, we cannot fully and authentically approach God in worship without the gift and blessing of his Holy Spirit. As Christians who received his Spirit when we were born of God through our faith and baptism (John 3:3-7, 4:23-24; Titus 3:3-7), we can now speak to him and worship him openly and confidently — our spirit combined with the Holy Spirit in us, worshiping God who is Spirit. The Spirit within us makes us a place where God lives through his Spirit (1 Corinthians 6:19-20). The Spirit intercedes for us when we approach God in prayer (Romans 8:26-27). We are then filled with God’s Spirit as we worship him (Ephesians 5:18-20). No wonder Jesus commanded:
God is spirit, and his worshipers must worship him in spirit and in truth.
That’s with our spirit, combined with the Holy Spirit, and with worshiping God appropriately; then God is praised and pleased.