Wolfenstein game help

I’m stuck at this level! How to proceed further? How to destroy the machine! If i step into the chruch! the door closes & i don’t ‘ve any clue to destroy the machine with the available weapons!Did i miss any weapon, that should ‘ve be picked to destroy the machine? Even, if i use veil power! i see some bee kinda creatures that attacks me! But no clue to destroy the machine!
So, people who ‘ve completed the game! please help me! thanks in advance
Answer #1
http://wikicheats.gametrailers.com/index.php/Wolfenstein_-_PC_PS3_XB360/Walkthrough
Answer #2
http://wikicheats.gametrailers.com/index.php/Wolfenstein_-_PC_PS3_XB360/Walkthrough
thank you friend!