Double agent by Grace Junkie

I seem to live my life like an actor and every Sunday morning I begin acting, my part is so simple, all it takes is to fake hypnosis, go on my knees, lift up holy hands and say amen and once its time to share the grace acting is over. I've always loved spy movies that involve double agents, growing up I wished I could be a double agent thus, I am a leader in church, I worship, I give my tithes and do everything a brother will do in the house of God, merely looking at me , anyone could say I was bound for heaven. That is the real me.
Sunday is gone and its the weekdays and I seem to have shed my sheep clothing and revealed the inner wolf because I'm like every other power-hungry everyday individual, I walk with head held high and look down on anyone who is not up to my standards, I treat everyone with retrospect. Merely looking at me, anyone could say ,i was bound for eternal damnation. That is the real me.
So who am I?
I read my bible and put it to practice at church and in the evening I read my collections of porn magazines and end up
exhausted in my bathroom after a long session of self imposed orgasm.
I took the communion, ate his body and drank his blood. But now its Saturday and I've eaten the forbidden fruit and staggered home with my frangible legs and my spinning head as a result of my drowning in bottles of alcohol.
I wear my gown of snow white in church but on other days, I turn it inside-out to reveal the pitch-black with crimson-red
embroidery.
I gave my life to God and i claim to be born anew. But i always find myself doing the devil's bidding and trying whatever he wants me to. So who am I?
                 *I am a double agent*