Basically, the song repeats 



Em (Em7 if you're lazy like me), Cadd9, G, D, Dsus4 throughout, with a pull

off from Dsus4 to D every loop.



At 2:31 into the song, where the lyrics end with: 



"Don't take it

Don't take it

Don't take it

Don't take it"



it then rolls into this little picking riff:



---------3-------------3---------------3---------------3p2-0h2---3p2-|

-----3-----3---3---------3---3-----3-----3---3-------3---------------|

-------0-----0---0---------0---------0-----0---0---2-----------------|

---------------------2-----------0-----------------------------------|

---2---------------3-------------------------------------------------|

-0-----------------------------3-------------------------------------|4x

 Em7               Cadd9       G                   D/Dsus4            



Back to the chords...



Then at 4:11, after the lyrics finish:



"I wanted so much to believe" it starts into the picking again while repeating

"Hey God". Same as above, repeat 2x to close out the song.