What does the following text mean? Any ideas?

Jo xka Jop Aropibv, lc krjybo clro, Mofsbq Aofsb,
tbob molra ql pxv qexq qebv tbob mbocbzqiv klojxi,
qexkh vlr sbov jrze.

Qebv tbob qeb ixpq mblmib vlr’a bumbzq ql yb
fkslisba fk xkvqefkd pqoxkdb lo jvpqboflrp,
ybzxrpb qebv grpq afak’q elia tfqe prze klkpbkpb.

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