This is an apocalyptic poem. The bodies that are scattered are those of the grave: the burial plots, the sea.
And all the regulations and authorities of this world will fall as the dead rise first.

Holy Sonnet

At the round earth’s imagin’d corners, blow
Your trumpets, angels, and arise, arise
From death, you numberless infinities
Of souls, and to your scatter’d bodies go;
All whom the flood did, and fire shall o’erthrow,
All whom war, dearth, age, agues, tyrannies,
Despair, law, chance hath slain, and you whose eyes
Shall behold God and never taste death’s woe.
But let them sleep, Lord, and me mourn a space,
For if above all these my sins abound,
‘Tis late to ask abundance of thy grace
When we are there; here on this lowly ground
Teach me how to repent; for that’s as good
As if thou’hadst seal’d my pardon with thy blood.

John Donne