In Deuteronomy 18:10, where the Israelites are prohibited from being "an observer of times,&quo
“There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch.” Deuteronomy 18:10
The expression observer of times occurs Deut 18:10, and the plural equivalent in Deut 18:14. The translation observer of times is someone who sees the future. The Septuagint (LXX) translation simply indicates someone that tells omens. An omen is a sign that precedes an event. Natural phenomena, strange birth defects, shapes of clouds, color of the sky, nature signs or animals acting in unexplainable ways are all commonly seen as omens. Omens can be good or evil, that is, they can foretell a good, positive event or an evil, harmful one. The superstitious might consider finding a heads-up penny a good omen but see a black cat crossing their path as a bad omen.
Omens are closely tied with fortune-telling and divination, as the omen must be “read” or “divined” by someone who knows how. Throughout the ancient world, omens (also referred to as signs and portents) were believed, divined, and obeyed. For example, in ancient Assyria if the king received an evil omen, he would go into hiding and the Assyrians would place a decoy king on the throne in anticipation that the evil event would befall the false king instead of the true one.
Signs sometimes occurred in the Bible in association with prophecies from God. Isaiah the prophet said that he and his children were “signs and symbols” to Israel (Isaiah 8:18). The names of Isaiah’s children were meaningful to Israel’s future (Isaiah 8:1–4). Also, God made Isaiah walk naked and barefoot as “a sign and omen against Egypt and Cush” (Isaiah 20:3). In this case, God placed Isaiah’s nakedness in the sight of those doomed lands as a sign to them about their destruction. Another divine prophecy accompanied by a sign in the book of Isaiah is the backwards movement of the shadow on the sundial (Isaiah 38:7–8). These events—these “omens”—were clear confirmations of God’s plan.
Another example of a sign or “omen” happened before the exodus. God sent Moses to Pharaoh with a sign: when Moses threw his staff down, God turned it into a serpent. This miracle was specifically designed to convince those who did not believe (Exodus 4:1–5). The presence of a snake in the royal court should also have been a sign to Pharaoh of the plagues to come, but he failed to heed the omen. Another person who tragically failed to heed a divine omen was Pontius Pilate. During Jesus’ trial, Pilate’s wife sent him an urgent message: “While Pilate was sitting on the judge’s seat, his wife sent him this message:
“When he was set down on the judgment seat, his wife sent unto him, saying, Have thou nothing to do with that just man: for I have suffered many things this day in a dream because of him.” Matthew 27:19
These portents occurred in the Bible, usually through God’s prophets, when it served God’s purpose. However, the Bible expressly forbids divination of any kind:
“There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch. Or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer. For all that do these things are an abomination unto the Lord: and because of these abominations the Lord thy God doth drive them out from before thee.” Deuteronomy 18:10–12