\documentclass{book}

\input TeX4ht.sty \Preamble{html}
\begin{document}  \EndPreamble

\ConfigureListOf{enumerate}
   {\HCode{<HR>}}
   {\HCode{<HR>}}
   {\HCode{<STRONG>}}
   {\HCode{</STRONG>} }

\begin{enumerate}

\item Psalms (131:1)

\item My heart is not
   haughty, nor mine eyes lofty:

\item neither do I exercise
   myself in great matters, or
   in things too high for me.

\end{enumerate}

\end{document}