Zebulun and Issachar, sons of Leah, were neighbors in Canaan, and, being on the seaboard, became wealthy by commerce. The calling of the peoples may refer to the Gentile proselytes who were influenced by these tribes, 1Ki 5:1-6; Mar 7:26.
The blessing of the other tribes is suggested by their position in Canaan: Gad, the leader of the west; Dan standing on the southern frontier, like a lion at bay; Naphtali, possessing the sea of Galilee, see r.v. margin; Asher on the northwest, with mountain, barriers against invasion. “Iron and brass!”
Let your soul dwell in the timeless, changeless, tireless God. There is none like Him. He will ride through heaven to help you, will thrust out the enemies that resist your progress, will be your fountain and dew, your corn and wine, and will place beneath you arms as tender as they are loving. However low you fall, they will always be underneath. As your day, so your strength!