Answer:
The first person to practise Judaism is Abraham - whilst the first person born is Adam.
Answer:
Israel
Explanation:
Israel as God's firstborn
In Exodus, Moses is instructed to say to Pharaoh "Thus saith the LORD, Israel is my son, my firstborn. (Exodus 4:22) This is prophetically attached to Ephraim, the Kingdom of Israel in Jeremiah 31:9.
