1 Corinthians 10: 1 - 6, 10 - 12
1 I want you to know, brethren, that our fathers were all under the cloud, and all passed through the sea,
2 and all were baptized into Moses in the cloud and in the sea,
3 and all ate the same supernatural food
4 and all drank the same supernatural drink. For they drank from the supernatural Rock which followed them, and the Rock was Christ.
5 Nevertheless with most of them God was not pleased; for they were overthrown in the wilderness.
6 Now these things are warnings for us, not to desire evil as they did.
10 nor grumble, as some of them did and were destroyed by the Destroyer.
11 Now these things happened to them as a warning, but they were written down for our instruction, upon whom the end of the ages has come.
12 Therefore let any one who thinks that he stands take heed lest he fall.

EWTN