Worship is paying homage to God, Jesus Christ, and veneration of the saints. Down through the history of the Church there are 3 primary contexts of worship in the Catholic Church: liturgical, Eucharistic, and devotional.
God doesn’t need our worship. He is complete and perfect within Himself. So, why is there a need for us to worship? It is because we are not complete. When we worship God it draws us closer to Him and helps us to understand His unconditional love for us. Worshiping God changes us for the better.
Therefore, since we receive a kingdom which cannot be shaken, let us show gratitude, by which we may offer to God an acceptable service with reverence and awe