Goofs

(at around 1h 26 mins) Angela fires her gun consecutively 30 times without reloading, but her Smith and Wesson Model 6906 holds a total of 13 rounds.

(at around 16 mins) When Angela goes to see Isabel's body, the clock on the wall over the pool reads 6:45, yet in the same scene Angelas watch appears to read 3:45. Then, at the elevator with Constantine, the clock reads 3:40.

(at around 35 mins) When Angela and Constantine are speaking, he is smoking a cigarette and he traps a spider under a cup with smoke. In the next shot, the cup and the spider are gone from where they were set and in the shot after that, it's in a completely different spot on the table.

(at around 39 mins) When the street lights are shutting down, before the demons attack Constantine and Angela, the red traffic lights can be seen to shut down twice.

(at around 13 mins) When Isabel falls through the window into the pool, it is very shallow. She shows no damage to her body and there is no blood in the pool even though she broke through the massive glass skylight.

(at around 1h 22 mins) In one scene Chas is seen melting down gold jewelry to make bullets on a stove top in a small skillet. This however is not possible as a stove could never produce enough heat to melt gold in this fashion.

(at around 1h 16 mins) John and Angela both say that Jesus' actual cause of death was from being stabbed with the Spear of Destiny. However, in the Gospel of John, which describes the incident, Jesus was already dead when he was stabbed with the spear.

John Constantine has been in comic books beginning in 1985. In multiple issues he has gone out of his way to clarify the pronunciation of his name; "John Constantine. T-I-N-E. Rhymes with 'wine'." Every instance in this movie it is mispronounced as "teen."

(at around 1h) When Constantine enters the bowling center, we see all of the lanes; however, when Constantine goes into the machine area, the machines are not bowling machines; and there is a walkway between the backs of the machines. The bowling center was one location, while the machines were in another location.

(at around 26 mins) When Angela is looking at the video of Isabel's suicide, she rewinds it, but the button she pushes on the far left is not the "rewind/search" button on QuickTime Player, but instead the "return to beginning".

(at around 41 mins) When the bus drives past Constantine, it's traveling on the wrong side of the road, against traffic.

(at around 1h 26 mins) The group of demons in the room near the pool is first shown while Angela is firing her gun. The exact same shot is shown when Constantine enters the room, but the shot has been flipped horizontally. There is no significance to this, but is done so that it doesn't look like the same shot a second time around.

(at around 1h 8 mins) Freeze-framing the exploding bathtub segment reveals that an Asian-looking stand-in for Rachel Weisz with her hair pulled back tightly behind her left ear actually makes the move from tub to floor.

(at around 18 mins) When John puts the needle on the first track of Dave Brubeck's "Time Out" album, "Take Five" begins to play. "Take Five" is the third track.

There are two police cars with the number 274 in the scene with the EZ Mart.

In the opening scene, when the mirror shatters and the girl comes out of her trance, she discovers she is tied to the bed, and struggles a bit against her bonds. But only her right hand is tied down; her left hand is free and she pretends it is bound.

(at around 1h) When John is talking on his cell phone to Beeman the line goes dead and a dial tone is heard. Cellular phones do not have dial tones.

(at around 2 mins) The kettle shown in the opening scene whistles as it boils, increasing in volume and pitch until the gas underneath it is turned off. However the kettle has a normal spout - not a whistle - and should not be whistling at all.

Whenever Angela draws her weapon, there is a sound of the hammer being cocked. The Smith and Wesson 6906 has a "bobbed" hammer, no "handle" to get your thumb onto easily. Cocking the weapon is difficult, especially since her thumb never goes near it. It's also policy for most police departments to fire the first shot without cocking the weapon first. In some departments, not following this policy is grounds for immediate dismissal.

(at around 1h 6 mins) A crew member is reflected in the water when Constantine dunks Angela in the bath tub.

(at around 1h 35 mins) When Gabriel picks Constantine up, two lines can be seen attached to him and pulling him up.

At around 1hr 21min Constantine uses the chair and faces East. The reason he wishes to face east is because he believes that Israel, the land where Jesus is told to have died, is in the east. However, taking into account the curvature of the earth, based on his location, he would instead have to face NorthEast, or SouthEast, based on his location, presuming he's in the United States.

The case rests the same with how Muslims face North East when praying towards Mecca, which is at a relatively similar distance.

One of the major plot points is that Constantine is trying to bargain his way out of going to Hell, but can't because he took his own life. He later threatens to absolve a demon of his murders which would send the demon to heaven. One character also later mentions that humans have redemption from the Lord if they ask for it, even if they are murderers. It is never explained why these rules do not apply to Constantine.

The Spear of Destiny was taken by Adolf Hitler at the start of the anschluss of Austria. The opening scene features the Spear being unwrapped from a Nazi flag, hence indicating it was the Spear taken from Austria. However, while the Spear and other artifacts were very nearly lost or destroyed at the end of WWII, they were rescued and the Spear returned to Austria. See the first episode of Myth Hunters (2012) (Hitler and the Spear of Destiny (2012)) for details.

Balthazar was blasted by Constantine's gun and torn to pieces. As Balthazar lay on the conference room table a figure appears to enter the room and Balthazar begs his master to restore him. This master is Mammon, the son of Satan. Mammon not appear on Earth in this manner. He can only return when Angela is sacrificed with the Spear of Destiny.

Through out the movie, people have freewill and then destiny. You can't have both, it has to be one or the other.

(at around 21 mins) The priest tells Angela that suicide is a mortal sin and therefore Isabel cannot have a Catholic funeral. While the church does still consider suicide a sin, this judgment does not hold in cases of mental illness. In modern times, suicide is considered evidence of mental illness, and since Isabel was in a mental institution, whether or not she may have a Catholic funeral is a moot point. People who commit suicide are no longer refused a Catholic burial in consecrated ground.

(at around 58 mins) When in the car about to call Beeman, Constantine says that the bible in hell gives a whole new meaning to "Revelations". The last book in the Bible is actually "Revelation", without the 's', as its story is considered to be a single "revelation." (This mistake is common in real life.)

(at around 1h 9 mins) In the bathtub scene, when the tub breaks and Angela (Rachel Weisz) is on the floor, John (Keanu Reeves) says "Rachel" when he should've said "Angela" instead.

(at around 58 mins) When John, Angela and Beeman are discussing the Bible passages about the Son of Satan, Angela says "There's no 17th Act in Corinthians" and he replies that the Bible in Hell has more "acts." The Bible is traditionally divided into chapters, not "acts".

(at around 50 mins) When Constantine and Angela go for pancakes after his journey into hell because he says that he has to eat, he never takes a bite of food during the entire scene. He pokes around with his fork, but never eats, which is strange as that's the entire reason they went there.