An Expression Of Praise And Thanksgiving For God's Intervention On His Behalf (Psalms 57:7-11).
Even in the midst of his trials David was able to sing and compose Psalms, for his delight was in his God, and he now calls on himself to wake early in order to do so. He wants all peoples and nations to be aware of God's goodness and of His covenant love and faithfulness. He wants God's glory to be above all the earth (Psalms 57:5).
‘My heart is fixed, O God, my heart is fixed,
I will sing, yes, I will sing praises.'
He assures God that his heart is fixed on one thing, the praise and glory of God. And to that end he will sing, yes, he will sing praises. Hunted he may be but his spirit is free.
‘Awake up, my glory, awake, psaltery and harp,
I myself will awake right early.'
So he calls on his own spirit (his glory) to wake up. He calls on his psaltery (a stringed instrument) and harp to awake. He assures God that he himself will awake right early for the purpose of praising God. He wants the day to begin with praise, before the time arrives for once more evading the enemy.
‘I myself will awake right early' or ‘will awake the dawn'. He does not want to wait for the dawn to wake him, but wants himself to awake the dawn.
‘I will give thanks to you, O Lord, among the peoples,
I will sing praises to you among the nations.'
‘For your covenant love is great to the heavens,
And your truth to the skies.'
And his purpose is in order to give thanks to his Sovereign Lord among the peoples, and to sing His praise among the nations. There may be a hint in this that among his six military units were men from a number of nations. But his thoughts are also looking forward to the time when God fulfils his promise to him and he comes into his kingship.
And what he wants to bring to men's attention is God's covenant love which is so great that it is great to the heavens. It stretches to heaven above. and His trustworthiness and faithfulness which reaches to the skies.
‘Be you exalted, O God, above the heavens,
Let your glory be above all the earth.'
He finishes the Psalm with a repeat of his prayer that God might be exalted, from Psalms 57:5. He calls on God to exalt Himself above the heavens, and let His glory be above all the earth. In other words that God might reveal Himself as above all and over all.