וְהַחֹנִ֥ים עָלָ֖יו מַטֵּ֣ה יִשָּׂשכָ֑ר וְנָשִׂיא֙ לִבְנֵ֣י יִשָּׂשכָ֔ר נְתַנְאֵ֖ל בֶּן־צוּעָֽר׃
and those that pitch next unto him shall be the tribe of Issachar; the prince of the children of Issachar being Nethanel the son of Zuar,
Read kabbalistic (mystical) interpretation of Numbers 2:5: and classical mystical sources.