Is God atemporal (existing outside of time altogether) or everlasting (existing at every moment within time)? If God is outside of time, how can He interact with a temporal universe and "act" in history?

Christian theology is the study of Christian beliefs and practices. It involves a systematic examination of core doctrines, sacred texts, and the nature of God, humanity, and the world from a Christian perspective. The goal is to understand and articulate the truth of the Christian faith.

https://www.sefaria.org/texts/Tanakh
https://www.vatican.va/archive/bible/genesis/documents/bible_genesis_en.html
https://quran.com/ar

he ultimate purpose is to know about God, and to understand and communicate the divine truth revealed in the Christian faith.