SEV Biblia, Chapter 1:1
¶ Estos son los nombres de los hijos de Israel, que entraron en Egipto con Jacob; cada uno entró con su familia.
Clarke's Bible Commentary - Exodus 1:1
Verse 1. These are the names] Though this book is a continuation or the book of Genesis, with which probably it was in former times conjoined, Moses thought it necessary to introduce it with an account of the names and number of the family of Jacob when they came to Egypt, to show that though they were then very few, yet in a short time, under the especial blessing of God, they had multiplied exceedingly; and thus the promise to Abraham had been literally fulfilled. See the notes on Genesis xlvi.
Matthew Henry Commentary
Verses 1-7 - During more than 200 years, while Abraham, Isaac, and Jacob lived a liberty, the Hebrews increased slowly; only about seventy persons wen down into Egypt. There, in about the same number of years, though unde cruel bondage, they became a large nation. This wonderful increase wa according to the promise long before made unto the fathers. Though the performance of God's promises is sometimes slow, it is always sure.
Original Hebrew
ואלה 428 שׁמות 8034 בני 1121 ישׂראל 3478 הבאים 935 מצרימה 4714 את 854 יעקב 3290 אישׁ 376 וביתו 1004 באו׃ 935