These were the clans of Gad, and their registration numbered 40,500.
Cross References
Numbers 1:25those registered to the tribe of Gad numbered 45,650.
Numbers 26:17the Arodite clan from Arod, and the Arelite clan from Areli.
Treasury of Scripture
These are the families of the children of Gad according to those that were numbered of them, forty thousand and five hundred.
Er and Onan
Genesis 38:1-10
And it came to pass at that time, that Judah went down from his brethren, and turned in to a certain Adullamite, whose name was Hirah…
Genesis 46:12
And the sons of Judah; Er, and Onan, and Shelah, and Pharez, and Zerah: but Er and Onan died in the land of Canaan. And the sons of Pharez were Hezron and Hamul.
1 Chronicles 2:3
The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the LORD; and he slew him.