Joshua 19:9

Part of the portion [allotted to] the descendants of Judah [became] the inheritance of the descendants of Simeon because the portion for the descendants of Judah was {too large for them}, so the descendants of Simeon inherited [from] their inheritance.

Exodus 16:18

And [when] they measured with the omer, the one gathering more had no surplus, and the one gathering less had no lack; they gathered {each according to what he could eat}.

2 Corinthians 8:14-15

At the present time your abundance [will be] for their need, in order that their abundance may also be for your need, so that there may be equality,

Treasury of Scripture Knowledge

Summary

Out of the portion of the children of Judah was the inheritance of the children of Simeon: for the part of the children of Judah was too much for them: therefore the children of Simeon had their inheritance within the inheritance of them.

Therefore

Bible References

Too much

Exodus 16:18
And [when] they measured with the omer, the one gathering more had no surplus, and the one gathering less had no lack; they gathered {each according to what he could eat}.
2 Corinthians 8:14
At the present time your abundance [will be] for their need, in order that their abundance may also be for your need, so that there may be equality,

Therefore

Joshua 19:1
The second allotment {fell} for Simeon, for the tribe of the descendants of Simeon, according to their families. And their inheritance was in the midst of the inheritance of the descendants of Judah.