Danger of Duplicity

I was just thinking how dangerous it is for Christians to pay only lip service in the confession of their faith. If we say we believe in Christ, but continue to live in sins without any remorse or conviction of our sins, we are basically believing in a God that we create ourselves. It will be a God that is totally different from the God in the Scripture. It will be a God of our imagination, and thus it will be a God who has no power, a God who cannot save. There is really no assurance of our salvation since this God is not real.