1 Pet 5:8 "Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:"
The Christian is to abstain from recreational drinking. The underlying word for sober is nepho, literally meaning "not drink". In 1 Pet 5:8 nepho is contrasted to devour - katapino which means to drink down, swallow down.
Adam Clarke says of 1 Pet 5:8:
"There is a beauty in this verse, and striking apposition between the first and last words, which I think have not been noticed; – Be sober, nepsate, from ne, not, and piein, to drink – do not swallow down – and the word katapien, from kata, down and piein, to drink. If you swallow strong drink down, the devil will swallow you down. Hear this, ye drunkards, topers, tipplers, or by whatsoever name ye are known in society, or among your fellow-sinners, strong drink is not only your way to the devil, but the devil’s way into you. Ye are such as the devil particularly may swallow down."
Meaning of nepho:
Vines Expository Dictionary of Biblical Words “to be free from the influence of intoxicants.”
Liddell and Scott’s Lexicon “to be sober, to live soberly, especially to drink no wine.”
Stephanus’s Thesaurus “he who abstains from wine.”
Bretschneider “I am sober, I abstain from wine.”
The Greek Dictionary of Byzantius “one who does not drink wine.”
The Greek-French Lexicon “abstinence from wine, sobriety.”
Robinson’s New Testament Lexicon “to be sober, temperate, abstinent, especially in respect to wine.”
Younge’s English and Greek Lexicon “without wine.”
Patristic Greek Lexicon, [Lampe], "be temperate, drink no wine."
Donnegan "to live abstemiously, to abstain from wine;"