Who is traditionally credited with building the First Temple in Jerusalem?

The tradition credits King Solomon with the construction of the First Temple in Jerusalem, also known as Solomon's Temple. According to biblical accounts, particularly in the books of Kings and Chronicles, Solomon, the son of King David, completed the temple around the 10th century BCE. This temple served as the central place of worship for the Israelites and was a significant symbol of God's presence among His people.

King David, while instrumental in the preparation and planning for the temple, did not build it himself; he established Jerusalem as the capital and gathered materials for the construction. Emperor Justinian, a Byzantine ruler in the 6th century CE, is known for his architectural contributions, particularly the Hagia Sophia, but he was not involved with the First Temple. Moses, a key figure in the Exodus narrative, led the Israelites out of Egypt and received the laws on Mount Sinai, but he lived long before the temple was built and is associated with the Tabernacle rather than the more permanent structure of the temple.

Thus, King Solomon is specifically linked to this monumental project, making that the correct answer to the question.