- Avrohom questioned G-D saying ‘I have no children and I will be inherited by my servant Eliezer of Damascus.
- G-D had already promised Avrohom three times that he would have children. Avrohom was not doubting that.
- It is known the main inheritance Avrohom gave to Yitzchok was wisdom, the mysteries of the Torah.
- Avrohom was worried that he would have a son at the end of his live and he would not have a chance to teach him.
- It would then come out that Eliezer would be the one who inherited all the wisdom, for he had spent years studying by Avrohom.

( R’ Yonason, Tiferet Yonason)