How do we know that the joy of worship is important in Christianity?

The importance of joy in worship is emphasized throughout Scripture, notably in Psalm 122, where David articulates his gladness about going to the house of the Lord. This joy stems from a recognition of God's grace and the opportunity to meet with fellow believers in praise and thanksgiving. It also reflects the believer's heart transformed by the Gospel, wherein worship becomes a joyous response to God's redemptive work. Corporate worship fosters unity, encouragement, and the sharing of faith, driving believers toward a deeper relationship with Christ and with each other as a church body.