The sign that marked the doorways of the Israelites during the Exodus was the blood of a lamb. According to the biblical account in the Book of Exodus, the Israelites were instructed to smear the blood on the doorposts and lintels of their homes. This sign was intended to protect them during the final plague in Egypt, where the firstborn of the Egyptians were struck down while sparing the homes marked with the blood. This event is commemorated in the Jewish festival of Passover.
Slow down
They were told to slay a lamb and smear the blood on the door of their houses , so that when the angel passes that way he will pass the houses with the blood on the door.
yield and look both ways
Because the previous morning, Gandalf had "scratched a queer sign on the hobbit's beautiful green front door" as a sign so that the dwarves would know that Bilbo was the one he had chosen to go on their adventure with them. By knocking very hard on the mark with his staff, Gandalf put a dent in the wood over top of where the sign had been, erasing any evidence that it had been there. That way, Bilbo would not blame Gandalf for all of the dwarves coming to his house to take him on an adventure.
This is usually a custom in the Chinese culture. The Chinese paint their doors red as a sign of a new beginning in the Chinese new year.
When I had the plaque, they put a sign on the door that read "Caution: Wet Floor." This was to alert anyone entering the area about the potential hazard. The sign served as a reminder to be careful and avoid slipping. It was a simple yet effective way to ensure safety during the cleaning process.
A yield sign in Britain is known as a give way sign. It is found at a side junction and tells a driver that if the way is clear he or she can filter onto the main road without having to come to a complete stop. Some junctions are marked with a halt sign, which means that the driver is expected to come to a complete stop, check the way is clear, and then move forward.
Jesus Christ.
Exodus 13:21 tells, "And the LORD (Yahweh) went before them by day in a piller of cloud to lead the way, and by night in a piller of fire to give them light....." This was a sign of His presence in the desert.(Exodus 40:38)
At a marked crosswalk, pedestrians have the right of way.
There is a entry in the door way. Every doorway has an exit sign to show you where to go out. The castle had a huge entry.
In the Bible, circumcision is a physical sign of the covenant between God and the Israelites. Circumcision involves the removal of the foreskin from the male genitalia. Uncircumcised refers to males who have not undergone this procedure. The practice of circumcision is mentioned in the Bible as a way for the Israelites to show their commitment to God.