How many years were there from God's call of Abraham to Israel's exodus from Egypt?
Scripture indicates the period from God's call of Abraham until Israel's departure from Egypt was 430 years. This span is described as mandated by God, with the 215-year point falling exactly halfway, showing the Egyptian slavery did not consume the entire period.
Les explains that the 430 years are counted from the call of Abraham until Israel would leave Egypt. He notes this total is stated explicitly as 430 years. The 215-year period from Joseph's death and the birth of Moses is exactly halfway in that span. Therefore, Israel's abject slavery was not the whole 400 years, not even 200 years, but more like 140 or 150 years.