At least to pray is left is left — Satan

At least-to pray-is left-is left-1
Oh Jesus-in the Air-
I know not which thy chamber is-
I'm knocking-everywhere-

Thou settest Earthquake in the South-5
And Maelstrom, in the Sea-
Say, Jesus Christ of Nazareth-
Hast thou no Arm for Me?
(F.377/J.502)
[1] is left:: to pray is the only thing human beings can do (when earthquakes and maelstrom come). is left:: (and that only thing, to pray) is being ignored. At least:: to ignore our prayer is the least thing; there are more disasters.
[2] in the Air:: airy, ethereal.
[3, 4] knocking everywhere:: Dickinson, or Satan, tried to annoy Jesus by noise.
[5, 6] Earthquake, Maelstrom:: how Jesus punished the world.
[8] arm for Me:: She, or Satan, prayed for the same power.