[Just mythoughts]

We’re talking here about the descendants of Jacob/Israel. All the Children of Israel are called God’s servant, as well as “My son, even My firstborn”. When land is spoken of, it is specified as land (’eretz’ in Hebrew).

Usage of Jacob means all the tribes. Usage of Israel, after Solomon, spoke of the House of Israel/ 10 Tribes... Northern kingdom.. Samaria... Sometimes used, Ephraim, because Ephraim was the largest tribe of the House of Israel.

[jjotto]

Depends on who your zayde is, I suppose.