O LORD, in your strength the king rejoices, and in your salvation how greatly he exults!  You have given him his heart’s desire and have not withheld the request of his lips. Selah  For you meet him with rich blessings; you set a crown of fine gold upon his head.  He asked life of you; you gave it to him, length of days forever and ever.  His glory is great through your salvation; splendor and majesty you bestow on him.  For you make him most blessed forever; you make him glad with the joy of your presence.  For the king trusts in the LORD, and through the steadfast love of the Most High he shall not be moved.  Your hand will find out all your enemies; your right hand will find out those who hate you.  You will make them as a blazing oven when you appear. The LORD will swallow them up in his wrath, and fire will consume them.  You will destroy their descendants from the earth, and their offspring from among the children of man.  Though they plan evil against you, though they devise mischief, they will not succeed.  For you will put them to flight; you will aim at their faces with your bows.  Be exalted, O LORD, in your strength! We will sing and praise your power. (Psalm 21 ESV)
We Worship a Victorious God
“Be exalted, O LORD, in your strength! We will sing and praise your power” (13). We praise God because he is the God of Abraham, Isaac and Jacob. He is the I AM. He is the ever-present, all-powerful, all-knowing God. Nothing will thwart his plans and designs for the universe and your place in it. Our prayers are based in real hope, not imaginary hope.
 saying, “We give thanks to you, Lord God Almighty, who is and who was, for you have taken your great power and begun to reign.  The nations raged, but your wrath came, and the time for the dead to be judged, and for rewarding your servants, the prophets and saints, and those who fear your name, both small and great, and for destroying the destroyers of the earth.” (Revelation 11:17-18 ESV)
 And they sing the song of Moses, the servant of God, and the song of the Lamb, saying, “Great and amazing are your deeds, O Lord God the Almighty! Just and true are your ways, O King of the nations!  Who will not fear, O Lord, and glorify your name? For you alone are holy. All nations will come and worship you, for your righteous acts have been revealed.” (Revelation 15:3-4 ESV)