There are quite a number of verses that seem to contrast the LDS teaching of exaltation, where man may become like God and God was once like man, in submission to a God like Him on a different world somewhere.
The most difficult ones to reconcile with this theology are in Isaiah 43, 44 and 45.
"Before Me there was no God formed, And there will be none after Me." Isaiah 43:10
"'I am the first and I am the last, And there is no God besides Me." Isaiah 44:6
"Is there any God besides Me, Or is there any other Rock? I know of none." Isaiah 44:8
"I am Yahweh, and there is no other; Besides Me there is no God." Isaiah 45:5
"Surely, God is with you, and there is none else, No other God." Isaiah 45:14
"I am Yahweh, and there is none else." Isaiah 45:18
"Is it not I, Yahweh? And there is no other God besides Me, A righteous God and a Savior; There is none except Me." Isaiah 45:21
"I am God, and there is no other; I am God, and there is no one like Me" Isaiah 46:9
There are more on this page here, which is where I got these, so I don't know what translation they are.
How does the LDS church respond to this?