Genesis 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."
Cross References (ranked by relevance)
Genesis 46:13
And the sons of Issachar; Tola, and Phuvah, and Job, and Shimron.
Deuteronomy 33:18
And of Zebulun he said, Rejoice, Zebulun, in thy going out; and, Issachar, in thy tents.
Genesis 35:23
The sons of Leah; Reuben, Jacob’s firstborn, and Simeon, and Levi, and Judah, and Issachar, and Zebulun:
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.