WHY DID YESHUA NEED TO DIE ON THE TREE TO REDEEM HIS ADULTEROUS WIFE ?

Deuteronomy 24:3 And if the latter husband hate her, and write her a bill of divorcement, and gives it in her hand, and sends her out of his house; or if the latter husband die, which took her to be his wife;

Deuteronomy 24:4 Her former husband, which sent her away, may not take her again to be his wife, after that she is defiled; for that is abomination before the LORD: and you shall not cause the land to sin, which the LORD your God gives thee for an inheritance.