Jamieson, Fausset and Brown on 1 Corinthians 10:6

6. were--Greek, "came to pass as."

our examples--samples to us of what will befall us, if we also with all our privileges walk carelessly.

lust--the fountain of all the four other offenses enumerated, and therefore put first (Jas 1:14, 15; compare Psa 106:14). A particular case of lust was that after flesh, when they pined for the fish, leeks, &c., of Egypt, which they had left (Nu 11:4, 33, 34). These are included in the "evil things," not that they are so in themselves, but they became so to the Israelites when they lusted after what God withheld, and were discontented with what God provided.