Certainly it is correct to say: Conscience is the voice of God.

From Notebooks 1914-1916, page 75, as translated by Gertrude Elizabeth Margaret Anscombe, first edition (1961), Second edition (1984).

citation

Ludwig Wittgenstein. (2023, October 13). Wikiquote. Retrieved December 15, 2023 from https://en.wikiquote.org/w/index.php?title=Ludwig_Wittgenstein&oldid=3379738.

Ludwig Wittgenstein (Wikipedia) Ludwig Josef Johann Wittgenstein (/ˈvɪtɡənʃtaɪn, -staɪn/ VIT-gən-s(h)tyne; German: [ˈluːtvɪç ˈjoːzɛf ‘joːhan ˈvɪtɡn̩ʃtaɪn]; 26 April 1889 – 29 April 1951) was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language. He is considered by some to be the greatest philosopher of the 20th century.