Of Monsters and Men - Your Bones Lyrics Meaning

I think the song can be interpreted differently depending on the person.

The first time I heard this I immediately thought that this song was repeatedly expressing something that had 'passs by' and it made me feel like the song was sung with the feeling of nostalgia.
Specifically this part
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"In the spring we made a boat
Out of feathers, out of bones.
We set fire to our homes,
Walking barefoot in the snow."
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"Distant rhythm of the drum
As we drifted towards the storm.
Baby lion lost his teeth,
Now they're swimming in the sea."

When I heard this part it made me think that... "There were warning signs of something terrible that will happen soon, Yet the inevitable still happened." As such the song used this part DRIFTED TOWARDS THE STORM as it was happening. which meant that everything happened as it will be, making sense of this part was used BABY LION LOST HIS TEETH, NOW THEY'RE SWIMMING IN THE SEA. 'It happened'
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"Troubled spirits on my chest
Where they laid to rest."
The birds all left my tall friend.
As your body hit the sand.
Million stars up in the sky
Formed a tigers eye
That looked down on my face,
Out of time and out of place."

This part of the song made me think of "A time that cannot be stopped nor be delayed and where he couldn't do anything, but watch as it all as it happened before his eyes. Which made pained him."
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"Awaken by the sound
Of a screaming owl.
Chasing leafs in the wind,
Going where we've never been."

As for this part...'Cannot fall asleep, Living for the sake of being alive, fulfilling the things they weren't able to do' Which made me interpret this part like a person haunted by the death of someone dear, mourning that death and suffering while living because of that.

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"Said goodbye to you my friend,
As the fire spread.
All that's left are your bones
That will soon sink like stones"

I interpreted this part as "Final goodbye, the realization of reality that that his friend is gone forever and will never return."

Basically, He said his final farewell to his dead friend 'as the fire spread' as time made it clear that his friend is gone and all that's left are his traces 'Bones' that will also be soon gone.

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Now for the greatest part that made sense for me and why Interpreted it this way!!!

"So hold on,
Hold on to what we are,
Hold on to your heart."

HE WAS TRYING TO HOLD ON TO EVERYTHING, THEY'RE MEMORIES AND FRIENDSHIPS. HE WAS TRYING TO HOLD ON TO THE HEART OF HIS DEAR FRIEND, EVEN IN DEATH. BUT INEVITABLE HE STILL HAD TO SAY GOODBYE. SINCE HIS FRIEND WAS ALREADY GONE, HE AND ALL THE MEMORIES AND TRACES THAT WAS LEFT BEHIND WERE ALSO FADING AWAY, NO MATTER HOW MUCH HE TRIED TO HOLD ON.

So this was used to describe what he was doing after the death of his friend "Hold on".

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The title "Your bones" and the song in my interpretation about someone who died and will never come back.