Worship is giving God the glory that is due to Him and Him alone.

• Isaiah 42:8 (NKJV)
  I am the Lord, that is My name; And My glory I will not give to another, Nor My praise to carved images.
• Isaiah 48:11 (NKJV)
  For My own sake, for My own sake, I will do it;
  For how should My name be profaned?
  And I will not give My glory to another.

Worship is reverence to God and acknowledging that He is our Lord. It is a means of telling God that without Him, we are nothing

• Psalm 124:2 (NKJV)
  “If it had not been the Lord who was on our side,
  When men rose up against us,
• John 15:5 (NKJV)
  “I am the vine, you are the branches. He who abides in Me, and I in him, bears much fruit; for without Me you can do nothing.

It is a means of expressing our affection to God and reliance on Him, thereby acknowledging that there is no other besides Him.

• Isaiah 44:6 (NKJV)
  “Thus says the Lord, the King of Israel, And his Redeemer, the Lord of hosts:
  ‘I am the First and I am the Last; Besides Me there is no God.
• Isaiah 45:5 – 6 (NKJV)
  I am the Lord, and there is no other; There is no God besides Me. I will gird you, though you have not known Me, ⁶ That they may know from the rising of the sun to its setting That there is none besides Me. I am the Lord, and there is no other;
• Exodus 8:10 (NKJV)
  So he said, “Tomorrow.” And he said, “Let it be according to your word, that you may know that there is no one like the Lord our God.