Surely God is my salvation

Isaiah 12:1-6
Surely God is my salvation; I will trust and not be afraid.
The Lord, is my strength and my song; he has become my salvation.
Give thanks to the Lord, call on his name; make known among what he has done, and proclaim that his name is exalted.
Sing to the Lord, for he has done glorious thing; let this be known to the world.
The song of God's salvation will be on every one's lips.
Isaiah pictures it all in physical terms. But what he sees is a radical change. This is a new earth, centered on God and obedient to his will.
Why?
Isaiah see the radical change in the future. So he praised the Lord and described the situation of every one's praises and proclaim God's holy name.
Yes, God is my salvation, my strength and my song. His name is exalted. Everyone will shout and sing new songs to praise the Lord.
God has done great and glorious things to me.
How?
Praise the name of the Lord with joy and trust in him without afraid.