Where was Gethsemane mentioned in the bible?

Gethsemane was the garden where Jesus was visited by an angel and betrayed by Judas.

It was located on the western slope of the Mount of Olives, east of Jerusalem.

Who are the Four Horsemen of the Apocalypse? These personifications of war, the Four Horsemen, appear in the Book of Revelation 6:1-8. They are: Conquest, Slaughter, Famine, and Death, riding horses that are, respectively, white, red, black, and green.
What holiday is associated with the Lord of Misrule? Christmas is associated with the Lord of Misrule. In medieval England, the Lord of Misrule was the leader of Christmas revelries.
What is meant by the title of William Burroughs’s novel Naked Lunch (1959)? The title to the drug-induced stream-of-consciousness narrative Naked Lunch means a "frozen moment when everyone sees what is on the end of every fork" and is repulsed by it. The title was suggested…
What is the first movie mentioned by name in Walker Percy’s The Moviegoer (1961)? The first movie mentioned by name in Walker Percy's The Moviegoer is Stagecoach (1939), directed by John Ford.
How large was Noah’s Ark? Noah's Ark was 300 by 50 by 30 cubits, according to Genesis 6:15. One cubit equals 18 inches.
What were the names of the criminals crucified at the same time as Jesus Christ? Tradition gives the names of the two thieves crucified at the same time as Jesus Christ as Dismas' and Gestas. The New Testament does not say.