Sacrifice was presumably complemented by the singing or recital of psalms, but the details are scant. Some scholars have concluded that the rituals detailed in Leviticus 1–16, with their stress on purity and atonement, were actually followed only after the Babylonian exile and the Yahwism/Judaism transition, and that in reality any head of a family was able to offer sacrifice as occasion demanded. In addition to the sacrificial priests, a great role in Yahwism, and still later Judaism, were played by prophets and epic heroes, reflected in the modern Jewish texts by legends about Samson, Elijah, and/or Joshua. Worship was performed on literal high places, with the Jerusalem Temple sitting on Mount Moriah/Mount Zion (hence, the Temple "Mount"), and the Samaritans' temple sitting on Mount Gerizim – although this may just be more of a coincidence than an intentional practice. Talismans and the mysterious "teraphim" were also probably used. It is also quite possible Yahwism employed ecstatic cultic rituals (compare the biblical tale of David dancing naked before the Ark of the Covenant) at times where they became popular, and potentially even human sacrifice. The center of Yahweh's worship lay in three great annual festivals coinciding with major events in rural life: Passover with the birthing of lambs, Shavuot with the cereal harvest, and Sukkot with the fruit harvest. These probably pre-dated the arrival of Yahwism, but they became linked to events in the national mythos of Israel: Passover with the exodus from Egypt, Shavuot with the law-giving at Sinai, and Sukkot with the wilderness wanderings. The festivals thus celebrated Yahweh's salvation of Israel and Israel's status as his holy people, although the earlier agricultural meaning was not entirely lost.