Genesis shows God’s grace to a universally wicked world as he enters into relationship with a sinful family line (Abraham) and promises to bless the world through him.
Exodus shows God’s grace to his enslaved people in bringing them out of Egyptian bondage.
Leviticus shows God’s grace in providing his people with a sacrificial system to atone for their sins.
Numbers shows God’s grace in patiently sustaining his grumbling people in the wilderness and bringing them to the border of the promised land not because of them but in spite of them.
Deuteronomy shows God’s grace in giving the people the new land 'not because of your righteousness' (ch. 9)."