ISSACHAR
Ya'akov's son, Issachar, is generally placed with Zebulun when the twelves tribes of Israel are listed. This remains true in the last list of the twelves tribes in Hitgalut (Revelation) 7:4-8. Issachar's name means to 'hire' or 'wages' and comes from the Hebrew word sakar.
B'reshiyt 30:18
"And Leah said, God hath given me my HIRE, because I have given my maiden to my husband: and she called his name Issachar."
This word first appears in B'reshiyth 15:1
"After these things the word of YHWH came unto Abram in a vision, saying, Fear not, Abram: I am thy shield, and thy exceeding great REWARD.
Issachar was prophesied by his father Ya'akov in B'reshiyth to be a bearer of burdens and a servant. The entirety of this chapter focuses on the future of the twelve tribes of Israel. Issachar's portion of the land is the area of Megiddo and Jezreel.
Shalom Alecheim!