2 Chronicles 28:3
1 Ahaz was twenty years old when he began to reign, and he reigned for sixteen years in Jerusalem. He did not do what pleased the Lord, in contrast to his ancestor David. 2 He followed in the footsteps of the kings of Israel; he also made images of the Baals. 3 He offered sacrifices in the Valley of Ben Hinnom and passed his sons through the fire, a horrible sin practiced by the nations whom the Lord drove out before the Israelites. 4 He offered sacrifices and burned incense on the high places, on the hills, and under every green tree.
1 Enoch 27:2
1 Then I said: 'For what purpose is this blessed land, which is entirely filled with trees, and this cursed valley between them?' 2 Then Uriel, one of the holy angels who was with me, answered and said: 'This cursed valley is for those who are cursed forever: Here shall all the cursed be gathered who speak unseemly words against the Lord with their lips and speak harshly of His glory. Here shall they be gathered together, and here shall be their place of judgment.' 3 In the last days, there shall be the spectacle of righteous judgment in the presence of the righteous forever: here the merciful shall bless the Lord of glory, the Eternal King. Here shall they be gathered together, and here shall be the place of their habitation.
Notes and References
"... Accursed valley — The Greek reads gē kataratos. While gē is used in places in LXX to translate Hebrew ʾerets (“land, earth”), this may be a transliteration of Hebrew gayʾ/gēyʾ (“valley”), suggesting an identification (both in light of the description “accursed” and the Jerusalem proximity) with Hebrew gēyʾhinnôm (“Valley of Hinnom”) or Aramaic gēhinnām (Gehenna), “a valley located on the south slope of Jerusalem (Joshua 15:8; 18:16).” This valley was the site of pagan worship in the late preexilic era, one that involved taking children and “passing them through the fire” (2 Kings 23:10; 2 Chronicles 28:3; 33:6; Jeremiah 7:31; 32:35) ..."
Heiser, Michael S. A Companion to the Book of Enoch: A Reader’s Commentary, Vol. 1 (p. 224) Defender Publishing, 2019