Hebrew alphabet
The Paleo-Hebrew alphabet was in common use in the kingdoms of Israel and Judah throughout the 8th and 7th centuries BCE. During the 6th century BCE, the time of the Babylonian exile, the Paleo-Hebrew alphabet was gradually replaced by the use of the Imperial Aramaic alphabet. The letters of Imperial Aramaic were again given shapes characteristic for writing Hebrew during the Second Temple period, developing into the "square shape" of the Hebrew alphabet.