Toasting is thought to come from sacrificial libations in which a sacred liquid (blood or wine) was offered to the gods in exchange for a wish, or a prayer for health. It was Greek and Roman tradition to leave an offering to the gods, including alcoholic beverages, during celebrations and commonly after a death.
Who started toasting?
It's a tradition that began centuries ago. “The ancient Hebrews, Persians and Egyptians were toasters, as were the Saxons, Huns and other tribes,” Paul Dickson writes in his book Toasts: Over 1,500 of the Best Toasts, Sentiments, Blessings and Graces.
What does the Bible say about toasting?
The Bible does not give us any direct mention of toasting, but there are a number of passages that indicate that the custom was observed.