Is God really on your side?

"“Your people seem to take the Bible seriously,” Eric said. “You think God is on your side?” “It’s more important for us to be on God’s side.”" ¹from "Network of Deception: A Novel" by Spencer E. Moses

"God's on my side."  We here this all the the time.  Even from football teams.

I read the book "Network of Deception", from which the title quote is drawn, a while back.  I'm finally getting around to writing about it now.

It made me wonder, does the Bible ever say anything about God being on our side?  
In fact, does it even say anything about us being on God's side?

Searching for various combinations of "on God's side", "God's side", "on your side", Etc. turned up only two results.

So - here are the results from searching for "on your side" in the NIV -

Siege of Jerusalem Symbolized

Eze 4:1 “Now, son of man, take a clay tablet, put it in front of you and draw the city of Jerusalem on it. 2 Then lay siege to it: Erect siege works against it, build a ramp up to it, set up camps against it and put battering rams around it. 3 Then take an iron pan, place it as an iron wall between you and the city and turn your face toward it. It will be under siege, and you shall besiege it. This will be a sign to the house of Israel.
Eze 4:4 “Then lie on your left side and put the sin of the house of Israel upon yourself. You are to bear their sin for the number of days you lie on your side. 5 I have assigned you the same number of days as the years of their sin. So for 390 days you will bear the sin of the house of Israel.
Eze 4:6 “After you have finished this, lie down again, this time on your right side, and bear the sin of the house of Judah. I have assigned you 40 days, a day for each year. 7 Turn your face toward the siege of Jerusalem and with bared arm prophesy against her. 8 I will tie you up with ropes so that you cannot turn from one side to the other until you have finished the days of your siege.
Eze 4:9 “Take wheat and barley, beans and lentils, millet and spelt; put them in a storage jar and use them to make bread for yourself. You are to eat it during the 390 days you lie on your side. 10 Weigh out twenty shekels of food to eat each day and eat it at set times. 11 Also measure out a sixth of a hin of water and drink it at set times. 12 Eat the food as you would a barley cake; bake it in the sight of the people, using human excrement for fuel.” 13 The LORD said, “In this way the people of Israel will eat defiled food among the nations where I will drive them.”

And that's it.

So why do we think God'son our side?

Maybe this passage from Romans?

More Than Conquerors

Ro 8:28 And we know that in all things God works for the good of those who love him, who have been called according to his purpose. 29 For those God foreknew he also predestined to be conformed to the likeness of his Son, that he might be the firstborn among many brothers. 30 And those he predestined (see note at the end on predestined), he also called; those he called, he also justified; those he justified, he also glorified.
Ro 8:31 What, then, shall we say in response to this? If God is for us, who can be against us? 32 He who did not spare his own Son, but gave him up for us all—how will he not also, along with him, graciously give us all things? 33 Who will bring any charge against those whom God has chosen? It is God who justifies. 34 Who is he that condemns? Christ Jesus, who died—more than that, who was raised to life—is at the right hand of God and is also interceding for us. 35 Who shall separate us from the love of Christ? Shall trouble or hardship or persecution or famine or nakedness or danger or sword? 36 As it is written:

“For your sake we face death all day long;
we are considered as sheep to be slaughtered.” 37 No, in all these things we are more than conquerors through him who loved us. 38 For I am convinced that neither death nor life, neither angels nor demons, neither the present nor the future, nor any powers, 39 neither height nor depth, nor anything else in all creation, will be able to separate us from the love of God that is in Christ Jesus our Lord.