Add spaces: Theoperator,whowasentrustedwithcodedmessages,wasisolatedinhisownlittleroom.Wecanseethesergeantbehindatelex-machine.

Answer: The operator, who was entrusted with coded messages, was isolated in his own little room. We can see the sergeant behind a telex-machine.

Add spaces: 8IamAlphaandOmega,thebeginningandtheending,saiththeLord,whichis,andwhichwas,andwhichistocome,theAlmighty.

Answer: 8 I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty.

Add spaces: Whentheseangelsmanifestthemselvestohumanbeings,theygenerallydosointheformofmen.

Answer:
When these angels manifest themselves to human beings, they generally do so in the form of men.