ISHNA Ji, Look at the Rahao... is posing the question "who has died??? As in astonishment / disbelief obvious by the statement... something wonderous has happened!) Also look further down it plainly says there is no death... and that part of us (the nonphysical part - soul if you will) continues on. It's that nonphysical part btw which 'experiences / is the 'doer')
ਰਾਮਕਲੀ ਮਹਲਾ ੫ ॥
Rāmkalī mėhlā 5.
Raamkalee, Fifth Mehl:
ਪਵਨੈ ਮਹਿ ਪਵਨੁ ਸਮਾਇਆ ॥
Pavnai mėh pavan samā▫i▫ā.
The wind merges into the wind.
ਜੋਤੀ ਮਹਿ ਜੋਤਿ ਰਲਿ ਜਾਇਆ ॥
Joṯī mėh joṯ ral jā▫i▫ā.
The light blends into the light.
ਮਾਟੀ ਮਾਟੀ ਹੋਈ ਏਕ ॥
Mātī mātī ho▫ī ek.
The dust becomes one with the dust.
ਰੋਵਨਹਾਰੇ ਕੀ ਕਵਨ ਟੇਕ ॥੧॥
Rovanhāre kī kavan tek. ||1||
What support is there for the one who is lamenting? ||1||
ਕਉਨੁ ਮੂਆ ਰੇ ਕਉਨੁ ਮੂਆ ॥
Ka▫un mū▫ā re ka▫un mū▫ā.
Who has died? O, who has died?
ਬ੍ਰਹਮ ਗਿਆਨੀ ਮਿਲਿ ਕਰਹੁ ਬੀਚਾਰਾ ਇਹੁ ਤਉ ਚਲਤੁ ਭਇਆ ॥੧॥ ਰਹਾਉ ॥
Barahm gi▫ānī mil karahu bīcẖārā ih ṯa▫o cẖalaṯ bẖa▫i▫ā. ||1|| rahā▫o.
O God-realized beings, meet together and consider this. What a wondrous thing has happened! ||1||Pause||
ਅਗਲੀ ਕਿਛੁ ਖਬਰਿ ਨ ਪਾਈ ॥
Aglī kicẖẖ kẖabar na pā▫ī.
No one knows what happens after death.
ਰੋਵਨਹਾਰੁ ਭਿ ਊਠਿ ਸਿਧਾਈ ॥
Rovanhār bẖė ūṯẖ siḏẖā▫ī.
The one who is lamenting will also arise and depart.
ਭਰਮ ਮੋਹ ਕੇ ਬਾਂਧੇ ਬੰਧ ॥
Bẖaram moh ke bāʼnḏẖe banḏẖ.
Mortal beings are bound by the bonds of doubt and attachment.
ਸੁਪਨੁ ਭਇਆ ਭਖਲਾਏ ਅੰਧ ॥੨॥
Supan bẖa▫i▫ā bẖakẖlā▫e anḏẖ. ||2||
When life becomes a dream, the blind man babbles and grieves in vain. ||2||
ਇਹੁ ਤਉ ਰਚਨੁ ਰਚਿਆ ਕਰਤਾਰਿ ॥
Ih ṯa▫o racẖan racẖi▫ā karṯār.
The Creator Lord created this creation.
ਆਵਤ ਜਾਵਤ ਹੁਕਮਿ ਅਪਾਰਿ ॥
Āvaṯ jāvaṯ hukam apār.
It comes and goes, subject to the Will of the Infinite Lord.
ਨਹ ਕੋ ਮੂਆ ਨ ਮਰਣੈ ਜੋਗੁ ॥
Nah ko mū▫ā na marṇai jog.
No one dies; no one is capable of dying.
ਨਹ ਬਿਨਸੈ ਅਬਿਨਾਸੀ ਹੋਗੁ ॥੩॥
Nah binsai abẖināsī hog. ||3||
The soul does not perish; it is imperishable. ||3||
ਜੋ ਇਹੁ ਜਾਣਹੁ ਸੋ ਇਹੁ ਨਾਹਿ ॥
Jo ih jāṇhu so ih nāhi.
That which is known, does not exist.
(that which is known... this physical world... does not exist, therefore, death of the physical body is false... death does not really exist)
ਜਾਨਣਹਾਰੇ ਕਉ ਬਲਿ ਜਾਉ ॥
Jānaṇhāre ka▫o bal jā▫o.
I am a sacrifice to the one who knows this.
ਕਹੁ ਨਾਨਕ ਗੁਰਿ ਭਰਮੁ ਚੁਕਾਇਆ ॥
Kaho Nānak gur bẖaram cẖukā▫i▫ā.
Says Nanak, the Guru has dispelled my doubt.
ਨਾ ਕੋਈ ਮਰੈ ਨ ਆਵੈ ਜਾਇਆ ॥੪॥੧੦॥
Nā ko▫ī marai na āvai jā▫i▫ā. ||4||10||
No one dies; no one comes or goes. ||4||10||
As you rightly pointed out, ALL is Creator anyway, we have just 'forgotten' that fact. So in reality there is no coming or going... it's all within the mind of the creator... just as a dream happens in our own minds)
Gurbani talks about death extensively. But death is not real, because this is all Akaal Purakh anyway. You are Akaal Purakh, and It never dies. 
--- this!!!!! But more than just being akal purakh as in star dust - unconscious etc... (ie: the physical bits that make our body up, as that is part of what is false - that which is known - but the very inner being YOU the part of you that says 'I AM' THAT is what never dies)
