Jewish children are given Hebrew names. For boys, the name is formally announced, and blessings are recited, at the brit milah ceremony. For girls, the same is done at a separate event, often (but not necessarily) during a regular synagogue service in the first few weeks of the baby's life. This tradition is primarily observed in more liberal Jewish movements and is not considered religiously required, so practices vary and are evolving. The Hebrew name is used on special occasions such as being called to the Torah and being married, and is typically in the form 'Yitzchak ben Avraham' (Isaac, son of Abraham) or (in egalitarian movements) 'Yitzchak ben Avraham v'Sarah' (Isaac, son of Abraham and Sarah).