documentclass[10pt,a4paper,twoside]{scrbook}%
usepackage[dvips=false,pdftex=false,vtex=false]{geometry}
 geometry{
   paperwidth=155mm,
   paperheight=230mm,
   inner=25mm,
       outer=23mm,
   bottom=20mm,
   top=27mm
}
usepackage[polutonikogreek,ngerman]{babel}%
usepackage[utf8]{inputenc}%
usepackage[T1]{fontenc}%
usepackage{anyfontsize}
usepackage{longtable}%
usepackage{tabularx}%
usepackage{array}%
usepackage{float}%
usepackage{setspace}%
usepackage{tabto}%
usepackage[font=small]{caption}
usepackage{scrlayer-scrpage}
usepackage{graphicx}%
usepackage{nameref}%
usepackage{xpatch}%
usepackage{morewrites}
usepackage{blindtext}
usepackage{rotating}%
usepackage[textwidth=2cm, textsize=tiny, backgroundcolor=white, linecolor=black]{todonotes}%
usepackage{acronym}
usepackage{bookmark}
usepackage{xcolor}
usepackage{mdwlist}
usepackage{titlesec}
usepackage{mathptmx}
usepackage[normalem]{ulem}
usepackage{newtxtext}% Times font
usepackage{newtxmath}% if you need math
usepackage{substitutefont}
substitutefont{LGR}{familydefault}{Tempora-TLF}
AtBeginDocument{%
  sbox0{grk{A}%
  globalexpandafterlet
  csname LGR/Tempora-TLF/m/scexpandafterendcsname
  csname LGR/Tempora-TLF/m/nendcsname
}}
usepackage{textcomp}%
%
%
% TEXT
%
renewcommand{baselinestretch}{1.2}% TEXT SPACING
%
renewcommand{arraystretch}{1.25}
%
newcommand{grk}[1]{{foreignlanguage{polutonikogreek}{#1}}}% GREEK TEXT
newcommand{lat}[1]{emph{{#1}}}% LATIN TEXT
%
%
% BIBLATEX:%
%
usepackage[style=historische-zeitschrift, maxnames=2, hyperref=false, backref=true, backrefstyle=none, backend=bibtex,idemtracker=true, block=none]{biblatex}% change to hyperref=true to get clickable links
usepackage[babel,german=quotes]{csquotes}%
bibliography{Inhalt}
%
%
%
% REDESIGNING TITLE STYLES (REQUIRES TITLESEC)
%
titleformat{chapter}[display]% CHAPTER
  {fontsize{11}{12}selectfontscshapecentering}
  {scshapechaptertitlename thechapter.enskip}{1pt}{fontsize{11}{12}selectfont}
  titlespacing*{chapter}{0pt}{30pt}{30pt}% FIRST NUMBER BEFORE LAST NUMBER AFTER
titleformat{section}[block]% SECTION
  {fontsize{10.5}{8}selectfontcentering}
  {thesection.enskip}{1pt}{fontsize{10.5}{8}selectfont}
  titlespacing*{section}{0pt}{15pt}{15pt}% FIRST NUMBER BEFORE LAST NUMBER AFTER
titleformat{subsection}[block]% SUBSECTION
  {fontsize{10.5}{8}selectfontcenteringitshape}
  {itshapethesubsection.enskip}{1pt}{fontsize{10.5}{8}selectfont}
  titlespacing*{subsection}{0pt}{15pt}{10pt}% FIRST NUMBER BEFORE LAST NUMBER AFTER
%
%
begin{document}%
%
%
frontmatter
tableofcontents
pagestyle{scrheadings}%
chapter{grk{L'ogoc-s'arx} – Ein in Fleisch gekleideter Gott}thispagestyle{empty}
section{grk{<Omoo'usios} – Der gottgleiche Sohn}
    blindtext
    begin{quote}grk{o>uko~un t~w m`en >agenn'htw patr`i o>ike~ion >ax'iwma fulakt'eon, mhd'ena to~u e@inai a>ut~w t`on a>'ition l'egontas; t~w d`e u<i~w t`hn <arm'ozousan tim`hn >aponemht'eon, t`hn >'anarqon a>ut~w par`a to~u patr`os g'ennhsin >anatij'entas; ka`i <ws >efj'asamen a>ut~w s'ebas >apon'emontes, m'onon e>usebos ka`i e>uf'hmws t`o @hn ka`i t`o >ae`i ka`i t`o pr`o a>i'wnwn l'egontes >ep> a>uto~u, t`hn m'entoi je'othta a>uto~u m`h paraito'umenoi, >all`a t~h e>ik'oni ka`i t~w qarakt~hri to~u patr`os >aphkribwm'enhn >emf'ereian kat`a p'anta >anatij'entes, t`o d`e >ag'ennhton t~w patr`i m'onon >id'iwma pare~inai dox'azontes, <'ate d`h ka`i a>uto~u f'askontos to~u swt~hros; »<o pat'hr mou me'izwn mo'u >estin«.}end{quote}
    blindtext
    cleardoublepage
    end{document}%