For (gar). Correct text, not de. Paul appeals to the experience of the Israelites in the wilderness in confirmation of his statement concerning himself in 1 Corinthians 9:26 and as a powerful warning to the Corinthians who may be tempted to flirt with the idolatrous practices of their neighbours. It is a real, not an imaginary peril. All under the cloud (pante upo thn nepelhn). They all marched under the pillar of cloud by day ( Exodus 13:21 ; Exodus 14:19 ) which covered the host ( Numbers 14:14 ; Ps 95:39). This mystic cloud was the symbol of the presence of the Lord with the people.