Perhaps the most memorable verse in Romans is 8:31.
The King James Version states:
What shall we then say to these things?
If God be for us,
who can be against us?
A comforting thought, but it takes a bit of mental gymnastics to nail down what it means. It can be taken to mean that if God is supporting us, then everyone is supporting us. Now I know that God has all the power necessary to save and exalt his children based on their choices. If that is the case, then it does not matter what opposition we encounter in an abstract sense, because God will not be defeated in his quest to bring about the immortality and eternal life of his children. However, there is opposition in all things. When we are temporarily going through some adversity it can be hard to keep the faith.
Obviously God is for all his children. Satan is against us. However small his team is, he has some teammates. So this verse is flawed at a literal level. God is for us, but there are beings against us.
If you think I am nit-picking you may want to take that up with GOD. Why? Because GOD inspired Joseph Smith to change the verse to the following:
What shall we then say to these things?
If God be for us,
who can prevail against us?
So we are not being assured there is no opposition or adversity in this time of testing. Paul is assuring us that despite a common enemy, we will "prevail" with GOD's assistance.