Considering this, what did David represent in Florence?
Because of the nature of the figure it represented, the statue soon came to symbolize the defence of civil liberties embodied in the Republic of Florence, an independent city-state threatened on all sides by more powerful rival states and by the hegemony of the Medici family.
Subsequently, question is, why is the David the symbol of Florence and the de Medicis? David as a symbol of Florentine power
For Florence he represented civic Republican virtues; the righteous fighting against the oppressor. Later the Medici adopted this symbol of power once they moved to Palazzo Vecchio to rule over the city.
Beside above, why is David such an important figure for Florence?
Remember that the biblical figure of David was special to the citizens of Florence—he symbolized the liberty and freedom of their republican ideals, which were threatened at various points in the fifteenth century by the Medici family and others.
What does David symbolize?
The name David has deep Biblical roots and means "beloved." It is derived from the Hebrew name Dawid, which evolved from the Hebrew word dod (beloved). In the Bible, David is an important figure and appears as the Old Testament second king of Israel.