แหล่งกำเนิด 10:1
Many thanks to Philip Pope for the permission to use his 2003 translation of the English King James Version Bible into Thai. Here's a link to the mission's website: www.thaipope.org
Arcana Coelestia #1244
1244. That 'his brother's name was Joktan' means the external worship of that Church has been shown just above. That external worship is called 'a brother', see above at verse 21 of this chapter where Shem is referred to as 'Japheth's elder brother'. This explains why the word 'brother' is added here.