Step 3 isn't about Jesus, whoever has been telling you that is wrong.
There is no action required in step 3, the only thing to do is 'make a decision'. It then speaks of a God of your understanding, which doesn't have to be a God of a Christian's understanding.
G (group) O(of) D(Drunks) ... the AA group was enough for me to start working step 3. I made a decision to turn my will and life over to those in the room that were willing to help me, i couldn't do it on my own. The reality is i made this decision at my first step meeting and i didn't know it.