This puzzle was designed to look like a Cryptogram (a.k.a. a simple substitution cypher) as a red herring. In fact, this is really just three bodies of text intermingled. The bulk of the text below consists of The Gettysburg Address interwoven with a backwards speech from Macbeth. Careful observation shows that the text at the end is not overlapped, and is in fact plain text from The Gettysburg Address.
Strewn throughout is the answer text:
TELL US WHO ENTERS NEXT
There was a mild error in the puzzle. Teams actually needed to interpret the phrase as if the last MacBeth text was “signifying nothing.” This is a reference to the Macbeth speech which is followed by the statement [Enter a Messenger], so in fact the answer is MESSENGER.
FHOCU URMSS CAOER MERAO NFDTS SEOVD EUNOY
HETTA FRIST AOGNO EORUA RCFIA HTTHO EORSS
EBBRH OCUEG EHPTS FYOHR TTFHI OENET HHTIG
SNCIO LNCTE INNIE MNATF ALNLE IWTNE AVTII
LOANG CNEOA NHCUE OIHVT ETDLI ANHLS LIEBE
ERRTT TYXAE NNDED HETDN IOCPA UTEES DLTAO
FTTHS EKPAR EOPPS OUSOI HTTIF OINET VHOAR
TGAGL NLIMV EONMA ARYEA CSRIE GANTI EMDOE
CQTUI AELEN SOUWO WYEYA ARMEE ELNIL GMAEG
EERDH ITNSA IGHRT ENAIT HCTII VWIOL SWTAO
RNTEE BSTTF IINHG TWAUH REWTR HUEOR YTEHR
AUTDN NAETE IMOTN EOLRE AVNAY LNSAD TNIAO
RNASI OLCEO VNOCM EOITV NEADG AENBD DSOOO
DWSEE DHITC TAHTG EUDOC HATNE LMONN OGNEA
NDDNU ARMEA WNERA IRBED MREAT WOONT ADGKR
OEOAL TIBLA LTITH LEEHW FTINE OLPDU OHFCT
THAAW TYWMA DRNWA ETHSA DVIED CIOSM AERTI
OSDYE ADSIL CLAET WETAI POODR OTTIW HOONH
OTFOT NHWAO TNFKI TEULB DWAAS SAIFY IANSA
ILHRC EISHT WITNA GHPTL TARCO EPFEO RRDTL
HUOOS HESWI HDOOR HOELR YEMGS AUVOE ITCHA
ERIGR YLLIK VCEIS UTQHY ARTOT TEHSA YTHNT
AETUI GONNO MTIYG HHTTE LSIUV OETIT TSIES
MAOLC TUOOG HETTG HNEIR HFTIO TNTGI NNING
YAFNI DNPGR IOSPY ERRUT FHDAN TAWDE NSUHO
OSUFL ODLDL OUTFH TIOSI BDUIT NIANY ABLDA
LROGT EERLS AETNA SSEIW TEICE ARNON MTOOT
NDDER DAIEC HASTI ENWEE HCTAD NNNAO ETGEC
AOTNS SEEHC TRNAO TPEUW REUCO AHNSN IOHTS
HTAEL RLFOD WNTAH SITSU GRRTO SUTNA DHTTH
REEBY RAALV PERMO EONPL AIWVO IDNAG HASNG
DNDIE KALDA WWHAO TSUTB RSUEG FRGIL LEEDL
HDENR AECHF AEVIE RCBOT NUSOE TCURO AHTTE
ADEID TYFTA SRUAD BOOTV YEAOW UERHP TOSOL
ROPOO FWDEE RTTHO GSAID LDEOV RADHE STYRA
ADCRT ETTHS EEWYO RRULO DLWLI ALDLN NLAIE
TMTIL TEDNE ODTRE ONCOE RRLFO ONEGL RBEAM
LELMY BSETE RSWAH LAETH WTEOS TAYYA HDEOR
TEYBA UDTMI OTRCF AENCN AEPVY ETRTF EOPRS
GIEHT TWNHI ASTPT EHEER YCDWI ODRHR EORME
OITTD INSAF WOORR URSOT MHOET LDINV AIWNO
GRRRA OTMHO ETRDT ROOBW XEADH ECDUI SCRAO
TFEED MHIET RAENT EOETB HEEVU ANHFD ILNUT
IOSWH EERDE WHOTR RKEWT HFIAC EHRTE HHEDY
EWIHD OEFVO AUHGD HLTUH OEHRS EEHHA SVETH
USFAR SONOB LYADV ANCED ITISR ATHER FORUS
TOBEH EREDE DICAT EDTOT HEGRE ATTAS KREMA
INING BEFOR EUSTH ATFRO MTHES EHONO REDDE
ADWET AKEIN CREAS EDDEV OTION TOTHA TCAUS
EFORW HICHT HEYGA VETHE LASTF ULLME ASURE
OFDEV OTION THATW EHERE HIGHL YRESO LVETH
ATTHE SEDEA DSHAL LNOTH AVEDI EDINV AINTH
ATTHI SNATI ONUND ERGOD SHALL HAVEA NEWBI
RTHOF FREED OMAND THATG OVERN MENTO FTHEP
EOPLE BYTHE PEOPL EFORT HEPEO PLESH ALLNO
TPERI SHFRO MTHEE ARTH