Ninth son of Jacob and the fifth by Leah. Leah named him Issachar ('reward'). Jacob likened his tribe to a strong donkey; the men of Issachar were later praised as those 'who understood the times and knew what Israel should do.'
And Leah said, God hath given me my hire, because I have given my maiden to my husband: and she called his name Issachar.Genesis 30:18, KJV
Genesis 49:14
Issachar is a strong ass couching down between two burdens:Genesis 49:14, KJV
1 Chronicles 12:32
And of the children of Issachar, which were men that had understanding of the times, to know what Israel ought to do; the heads of them were two hundred; and all their brethren were at their commandment.1 Chronicles 12:32, KJV
Numbers 1:28
Of the children of Issachar, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;Numbers 1:28, KJV
See how Issachar connects to every other figure in Scripture.