Biblical Musings Isaiah 44:6-8

"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. And who can proclaim as I do? Then let him declare it and set it in order for Me, since I appointed the ancient people. And the things that are coming and shall come, let them show these to them. Do not fear, nor be afraid; have I not told you from that time, and declared it? You are my witnesses. Is there a God besides Me? Indeed there is no other Rock; I know not one.  Isaiah 44:6-8 (NKJV)

What does this tell us about God? How should it affect how we live?