The word gamble means “to risk something of value on an outcome which depends on chance.” Because the outcome of a lottery “depends on chance” and playing it involves “risk,” then, by definition, playing the lottery is gambling.
The Bible does not specifically mention gambling, though it does mention the casting of lots for the purpose of decision making (Joshua 18:10; Nehemiah 10:34). And Proverbs 16:33 emphasizes the sovereignty of God: “The lot is cast into the lap, but its every decision is from the LORD.”
However, the main purpose of playing the lottery is to win money, and the Bible tells us what our attitude toward money should be. So often, riches get in the way of a man’s spiritual benefit (Mark 4:19; 10:25). Jesus teaches, “No one can serve two masters. Either you will hate the one and love the other, or you will be devoted to the one and despise the other. You cannot serve both God and money” (Luke 16:13). First Timothy 6:10 is where we find the famous warning that the love of money is the root of all evil.
Playing the lottery as a get-rich-quick scheme is statistically futile, and, the fact is, God wants people to work hard: “The one who is unwilling to work shall not eat” (2 Thessalonians 3:10). We ought to gain wealth through diligence, as a gift from the Lord: “Lazy hands make for poverty, but diligent hands bring wealth” (Proverbs 10:4).
Additionally, not only do gamblers typically covet money, but they also covet the things that money can buy. God forbids covetousness: “You shall not covet your neighbor’s house. You shall not covet your neighbor’s wife, or his male or female servant, his ox or donkey, or anything that belongs to your neighbor” (Exodus 20:17; see also 1 Timothy 6:10). Money is not the answer to life’s problems.
So, we would do well to be cautious about playing the lottery. There are probably many better uses for the money spent on a ticket, and we must guard against addictions to gaming. Buying a lottery ticket here and there may not be a sin, but greed is. Those playing the lottery must prayerfully examine their motives and, if they continue playing, do so responsibly and only in moderation.
 Got Questions Ministries. (2010). Got Questions? Bible Questions Answered. Bellingham, WA: Logos Bible Software.