Hejaz
Historically, the Hejaz has always seen itself as separate from the rest of Saudi Arabia. The Hejaz is the most populated region in Saudi Arabia; 35% of all Saudis live there. Hejazi Arabic is the most widely spoken dialect in the region. Saudi Hejazis are of ethnically diverse origins.
Old South Arabian
Old South Arabian comprised a number of languages; the following are those that have been preserved in writing (the dates follow the so-called 'Long Chronology'. Besides these, at least Jabal Razih survives today.Old South Arabian was written in the Old South Arabian script, a consonantal abjad deriving from the Phoenician alphabet. Compared with other parts of the ancient world, Palestine for instance, the number of surviving inscriptions is very high. Something in the region of 10,000 inscriptions exist. The Sabaean lexicon contains about 2,500 words.The inscriptions on stone display a very formal and precise wording and expression, whereas the style of the wooden inscriptions written in the cursive script is much more informal.