Warding Sigils

Warding sigils are a type of spell work used protect, hide or bind ones enemies. Sigils appear to range from Hermetic, astrological, alchemical, Kabbalistic and Enochian. If warding sigils are altered in any way, no matter how slight, they are rendered useless.

Episodes

4.15 Death Takes a Holiday

Demons cover a funeral home in Greybull, Wyoming with sigils to "angel-proof" the building, keeping any angels from entering.

5.01 Sympathy for the Devil

Castiel engraves Enochian sigils on the ribs of Sam and Dean, warding them from being found by any angels.

5.10 Abandon All Hope...

Castiel locates Crowley's residence, which has been warded to keep angels from entering.

5.20 The Devil You Know

Having been found out that he aided the Winchesters by giving them the Colt, Crowley squats in an abandoned house covered in warding sigils to stay hidden from Lucfier and his demons.

6.18 Frontierland

Having been injured in his fight with Rachel, Castiel teleports to Bobby's home and draws a warding sigil with his blood to keep hidden from any other angels.

6.20 The Man Who Would Be King

After discover Castiel is in league with Crowley, Sam, Dean and Bobby "angel-proof" Bobby's home. However, Bobby got some of the angel-proofing wrong, which allowed for Cas to enter and speak with Dean.

6.21 Let It Bleed

After learning from Bobby that Castiel will be looking for her for information on how to open a door to Purgatory, Eleanor Visyak goes into hiding; staying in a cabin protected with warding sigils. However, the moment she steps outside of the cabin, Castiel locates and abducts her.

6.22 The Man Who Knew Too Much

After Castiel breaks the mental wall in Sam's mind to keep the Winchesters from coming after him, Dean and Bobby take Sam to Bobby's Panic Room, which has been warded against angels.

7.01 Meet the New Boss

Having been given a reprieve by the newly powered Castiel, Crowley holds up in a Winnebago covered in warding sigls. However, as Castiel now has the power akin to God, he is easily able to bypass the warding.

7.21 Reading Is Fundamental

Sam, Dean, Meg and Castiel take the newly awakened prophet Kevin Tran to Rufus's Cabin to study the Leviathan tablet, where they draw warding sigils to keep hidden from any angels or demons.

8.02 What's Up, Tiger Mommy?

The abandoned building where the god of greed Plutus is holding his auction is covered in various warding sigils to keep the bidders in check. However, Plutus' assistant Beau, is bribed by Crowley to show him "loopholes," allowing him to use his powers.

8.10 Torn and Frayed

Crowley uses Enochian warding to hide himself, Kevin Tran and the potential prophets from being found. There are four main points of warding –- north, south, east and west which Sam and Dean need to alter in order to allow Castiel entrance into the building.

8.17 Goodbye Stranger

After discovering one of Lucifer's Crypts, Sam and Meg proceed to spray paint warding on the building to hide it from Crowley.

8.19 Taxi Driver

Freaking out over hearing Crowley's voice in his head, Kevin paints Enochian demon-warding symbols on the windows of Garth's houseboat, but when Crowley arrives, he simply shatters the windows and the symbols, allowing him entry.

8.21 The Great Escapist

After being taken by Crowley, Kevin is placed on a replica of Garth's boat that has been warded from angels. When Sam and Dean find Metatron, they learn that as the Scribe of God, he is able to erase Crowley's warding, allowing him to retrieve Kevin.

8.22 Clip Show

When Sam and Dean learn that Crowley is killing people Sam and Dean have saved in the past to get them to stop the trials, Crowley sends them to a location as dare for them to stop him. When they arrive at the Ivy Motel in Indianapolis, they are surprised to find Sarah Blake. Sam tells Sarah what is happening while Dean spray paints the room with warding sigils.