Caleb is a male given name. A character called Caleb is named in both the Bible

Bible

The Bible refers to any one of the collections of the primary religious texts of Judaism and Christianity. There is no common version of the Bible, as the individual books , their contents and their order vary among denominations...

 and Quran.
When the Hebrews came to the outskirts of Canaan, the land that had been promised to them by God, after having fled slavery

Slavery

Slavery is a system under which people are treated as property to be bought and sold, and are forced to work. Slaves can be held against their will from the time of their capture, purchase or birth, and deprived of the right to leave, to refuse to work, or to demand compensation...

 in Egypt

Ancient Egypt

Ancient Egypt was an ancient civilization of Northeastern Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. Egyptian civilization coalesced around 3150 BC with the political unification of Upper and Lower Egypt under the first pharaoh...

, Moses

Moses

Moses was, according to the Hebrew Bible and Qur'an, a religious leader, lawgiver and prophet, to whom the authorship of the Torah is traditionally attributed...

 (the Hebrew leader) sent twelve spies

The Twelve Spies

In the Book of Numbers, The Twelve Spies were a group of Israelite chieftains, one from each of the Twelve Tribes, who were dispatched by Moses to scout out the Land of Canaan for 40 days during the time the Israelites were in the desert...

  into Canaan to report on what was there—one spy representing each of the Twelve Tribes. Ten of the spies returned to say that the land would be impossible to claim, and that giants

Giant (mythology)

The mythology and legends of many different cultures include monsters of human appearance but prodigious size and strength. "Giant" is the English word commonly used for such beings, derived from one of the most famed examples: the gigantes of Greek mythology.In various Indo-European mythologies,...

 lived there who would crush the Hebrew army

Army

An army An army An army (from Latin arma "arms, weapons" via Old French armée, "armed" (feminine), in the broadest sense, is the land-based military of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps...

.