Sforno on Genesis 24:7/ספורנו על בראשית כ״ד:ז׳

1אלוקי השמים...ישלח מלאכו, may it be the will of the Lord that He will send His angel from the celestial regions. Seeing that it was he Who had taken me from there, and all events are under His constant supervision, He will not arrange matters in such a way that my son would be legally obligated to migrate to that land.

2ואשר דבר לי, furthermore, I remember that he assured me specifically that my offspring will become known as offspring of Avraham though my son Yitzchok.

3ואשר נשבע לי, seeing that He made me this promise reinforced by an oath, I am certain that He will not renege on it. [even if I were to fall out of favour in His eyes due to my own fault. Ed.] He will see to it that my son will be able to marry a suitable soul-mate and thus make His oath come true.