Rashi says on vaera, ?? ?????, to the ancestors, being concise. Maybe, the Baal Haturim explains that ????? has the same letters ?????, like Avraham Avinu who ??? ???? loved Hashem with his whoie heart. ??? ????, Yitzchak Avinu, who sacrificed himself with his whole soul and ???? ????, what is the most precious to you, your wealth, where Yaakov said that everything Hashem gives him he will give maaser, tithe by showing how they each loved Hashem.
