Exodus 40:38 (WEB)
For the cloud of the LORD was on the tabernacle by day, and there was fire in the cloud by night, in the sight of all the house of Israel, throughout all their journeys.
Catechism · 1
“In the theophanies of the Old Testament, the cloud, now obscure, now luminous, reveals the living and saving God, while veiling the transcendence of his glory - with Moses on Mount Sinai, at the tent of meeting, and during the wandering in the desert,” — Catechism footnote: Cf. Ex 40:36-38; 1 Cor 10:1-2.
