Almah derives from a root meaning "to be full of vigour, to have reached puberty". In the ancient Near East girls received value as potential wives and bearers of children: "A wife, who came into her husband's household as an outsider, contributed her labor and her fertility... er task was to build up the bet 'ab by bearing children, particularly sons". Scholars thus agree that almah refers to a woman of childbearing age without implying virginity.
Bible usage
The word almah occurs nine times in the Hebrew Bible:
A servant of Abraham tells his master how he met Rebecca. He prayed to the Lord that if an almah came to the well and he requested a drink of water from her, that should she then provide him with that drink and also water his camels; he would take that as a sign that she was to be the wife of Isaac. Rebecca, a young, unmarried girl, is that almah.
Miriam, an almah, is entrusted to watch the baby Moses; she takes thoughtful action to reunite the baby with his mother by offering to bring the baby to a Hebrew nurse maid.
In 1 Chronicles 15:20 and Psalm 46 heading a psalm is to be played "on alamot". The musical meaning of this phrase has become lost with time: it may mean a feminine manner of singing or playing, such as a girls' choir, or an instrument made in the city of "Alameth".
In a victory parade in Psalm 68:25, the participants are listed in order of appearance: 1) the singers; 2) the musicians; and 3) the "alamot" playing cymbals or tambourines.
The Song of Songs 1:3 contains a poetic chant of praise to a man, declaring that all the alamot adore him. In verse 6:8 a girl is favorably compared to 60 Queens, 80 Concubines, and numberless alamot.
In Proverbs 30:19, concerning an adulterous wife, the Hebrew text and the Greek Septuagint differ: both begin by comparing the woman's acts to things the author claims are hard to predict: a bird flying in air, the movement of a snake over a rock, the path of a ship through the sea; but while the Hebrew concludes with the way of a man with an almah, the Greek reads "and the way of a man in his youth".
The verses surrounding tell how Ahaz, the king of Judah, is told of a sign to be given in demonstration that the prophet's promise of God's protection from his enemies is a true one. The sign is that an almah is pregnant and will give birth to a son who will still be very young when these enemies will be destroyed.