Verse:
Cm                                          
 I'm feeling something, something different
          Bb        Ab        Fm
When you left, my picture changed.
Cm
 I was blinded, I'd not envisioned
         Bb         Ab        Db      Cm     
The same face in a different frame.
Pre chorus:
         Ab    Eb
It's an omen, caught my baby crying
G7                Cm
Saw the silver lining.
              Ab
It must be an omen
Eb                     G7
Needed you to show me, without you I am lonely.
Chorus: 
Cm             Gm
My mind would rule my heart
  Fm                            Bb
I didn't pay attention to the light in the dark
Ab          Gm
It left me torn apart
    Fm                          Ab Bb
But now I see your tears are an omen.
Cm          Gm        Fm  Bb 
Oh-Oh-Oh-Oh Oh-Oh-Oh Omen       
Verse 2:
Cm
You were waiting, I was vacant
     Bb     Ab      Fm    Cm
You left before my eyes,  then it hit me
https://www.coveralia.com/acordes/omen--feat--sam-smith--disclosure.php
                      Bb         Ab     Db     Cm
You're relocating and I need you by my side.
Chorus: 
Cm             Gm
My mind would rule my heart
  Fm                            Bb
I didn't pay attention to the light in the dark
Ab          Gm
It left me torn apart
    Fm                          Ab Bb
But now I see your tears are an omen.
Chorus: 
Ab             Gm
My mind would rule my heart
  Fm                            Bb
I didn't pay attention to the light in the dark
Ab          Gm
It left me torn apart
    Fm                          Ab Bb
But now I see your tears are an omen.
Ab             Gm
My mind would rule my heart
  Fm                            Bb
I didn't pay attention to the light in the dark
Ab          Gm
It left me torn apart
    Fm                          Ab Bb
But now I see your tears are an omen.
Cm          Gm        Fm  Bb 
Oh-Oh-Oh-Oh Oh-Oh-Oh Omen       (x6)
Gm Ab Bb
Please, tell me if something's wrong.