On-line Te Reo Māori Dictionary

Kei a Rangi ā tātou kai.
But if Jude will have our food in his possession we could say

Hei a Jude ā tātou kai.
Now this is different from saying

I a Jude te kai
The food was with Jude.

Kei a Jude te kai
The food is with Jude.