Holiness, Holy
noun, な adjective
God is holy. Everything about a holy god is full of holiness.
しんせい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
村人たちは、自然に対し神聖な敬意を持っています。
The villagers have a holy respect for nature.