what is the poem saying?

Question

the ills i sorrow at
not me alone
like an arrow
pierce to the marrow
through the fat
and past the bone
your grief and mine
must interwine
like sea and river
be fused and mingle
diverse yet single
forever and forever
let no man be so proud
and confident
to think he is allowed
a little tent pitched in a meadow
of sun and shadow
all his little own
joy may be shy unique
friendly to a few,
sorrow never scorned to speak
to any who
were false or true
your every grief
like a blade
shining and unsheathed must strike me down
of bitter aloes wreathed
my sorrow must be laid
on your head like a crown

Answer 1

It is about shared grief and sorrow.
rectify - intertwine to make it sound better
.

Answer 2

Sounds like the poem is talking about death, grief, and sorrow.