Unlike other deities, the God of the Bible is revealed as holy, righteous, and without sin. Righteousness, justice, and love are integral to God's character. They reveal his essential nature. The Mosaic Law revealed God's holiness to Israel. The Scriptures also reveal that man, unlike God, is not holy.
Man is sinful.
The early chapters of Genesis demonstrate how man became alienated in his relationship with God. Theologians call this the Fall. The penalty for man's sin was death. God had warned Adam of this. Their relationship with God was broken.