This sermon presents a theological and liturgical defense of the traditional call to worship, rooted in Psalm 100, as a divine summons that reorients the congregation to God's sovereignty, grace, and eternal faithfulness. It argues that worship must begin not with human preference or emotional experience, but with God's authoritative Word, which establishes the proper posture of humility, gratitude, and joy before Him. The seven imperatives in Psalm 100—making joyful noise, serving with gladness, coming with singing, knowing God as Creator and Shepherd, entering His gates with thanksgiving, giving thanks, and blessing His name—reveal worship as a sacred, communal act of submission and praise that transcends style or culture. The sermon critiques contemporary worship trends for prioritizing subjective experience over divine revelation, warning that such approaches risk reducing worship to self-centered performance rather than God-centered adoration. Ultimately, it affirms that true worship is not about human satisfaction but about glorifying God's unchanging character, where every element of the service flows from and returns to His holy name.