Exodus 6:18, 20
Exodus 6:18 ESV
The sons of Kohath: Amram, Izhar, Hebron, and Uzziel, the years of the life of Kohath being 133 years.
Exodus 6:20 ESV
Amram took as his wife Jochebed his father’s sister, and she bore him Aaron and Moses, the years of the life of Amram being 137 years.