Sunday Vayeira

G‑d paid Abraham a visit, as he sat at the entrance of his tent. Abraham suddenly noticed three travelers passing by, and ran to invite them into his home. These passersby, who were actually angels in human disguise, accepted the invitation, and Abraham and Sarah prepared a sumptuous feast for them. The angels informed Abraham that Sarah would give birth to a child exactly one year later. Eighty-nine-year-old, post-menopausal Sarah, who was standing nearby, heard this assurance, and laughed. G‑d was displeased with Sarah's lack of faith.