Not explicitly prohibited but conflicts with Christian principles: depends on covetousness (1 Timothy 6:10), poor stewardship, often exploits the poor. Most Christian traditions consider it sinful or inadvisable. 30/100 Caution.
The Bible does not use the word "gambling" — the practice predates institutionalized gambling. But biblical principles speak directly to its motivations. 1 Timothy 6:10 — "the love of money is a root of all kinds of evil" — addresses the covetousness that drives gambling. Proverbs 13:11 — "Wealth gained hastily will dwindle" — describes get-rich-quick schemes. Proverbs 28:20 — "the one in a hurry to get rich will not go unpunished."
The Christian case against gambling centers on stewardship: God entrusts resources to Christians to manage faithfully (Matthew 25:14-30), and gambling is structurally designed so the house wins — meaning regular gambling guarantees long-term loss of God's entrusted resources. The social harm argument also applies: gambling industries extract money disproportionately from those who can least afford to lose it. State lotteries particularly draw revenue from lower-income communities.
Most Christians who engage in casual gambling — a friendly poker game with pennies, a single lottery ticket, a charity raffle — are not engaging in the covetous, addictive, poverty-exploiting gambling Scripture addresses. The concern is gambling as a significant financial activity, habit, or addiction. Most Christian traditions consider casual recreational gambling permissible in conscience while warning strongly against it as a financial activity. See also Is Crypto a Sin? for a related stewardship discussion.
For a thorough evangelical treatment: GotQuestions on gambling.
For related questions on Christian liberty, see our guides on Is Drinking Alcohol a Sin? and our Is It a Sin? hub.
Questions about sin fall into two categories: things explicitly called sin in Scripture, and disputable matters (Romans 14-15) where Christians with different convictions should respect each other's consciences. Even when something isn't explicitly sinful: Does this practice reflect Christ's lordship over all of life (Colossians 3:17)? Is it beneficial — not just permissible? (1 Corinthians 10:23). Score: 30/100 Caution.
See our Is It a Sin? hub. GotQuestions and the Gospel Coalition provide thorough evangelical analysis.