To beguile is to deceive or lead astray, as Lucifer beguiled Eve in the Garden of Eden.

I walk in, and people go, 'Oh, look who it is! It's the devil! Speak of the devil!' It's fun. I'm having a lot of fun. I'm not going to lie. It's a little bit like being able to say anything you want to and getting away with it. 'Rush' was fun because he thought he was immortal, but this is more fun because Lucifer is immortal.

The thing about Lucifer is that by the end of the first season, his world is falling apart a bit. Anyone that he could call an ally or trust, he now can't, and that leaves him in a place that he's never been before.

For the show, it's really important that we remember that Lucifer is the Devil. It's important for Lucifer sometimes to remember that he's the Devil: to keep the notion that he is a wild animal that is seemingly being tamed but, at any moment, could snap.

Javert: There... out in the darkness. A fugitive running, fallen from God. Fallen from grace. God be my witness, I never shall yield, 'til we come face to face. 'Til we come face to face. He knows his way in the dark, mine is the way of the Lord. Those who follow the path of the righteous shall have their reward. And if they fall as Lucifer fell, the flames, the sword... Stars, in
your multitudes, scarce to be counted, filling the darkness with order and light. You are the sentinels, silent and sure, keeping watch in the night. Keeping watch in the night. You know your place in the sky, you hold your course and your aim. And each in your season returns and returns, and is always the same. And if you fall as Lucifer fell, you fall in flames. And so it must be, for so it is
written, on the doorway to paradise, that those who falter and those who fall must pay the price. Lord let me find him, that I may see him safe behind bars. I will never rest, 'til then! This I swear! This I swear by the stars!

[after Satan thwarts his son's plot]
Satan: So...
John Constantine: So.
Satan: Yeah, what do you want? An extension?
John Constantine: The sister, Isabel.
Satan: What about her?
John Constantine: Let her go home.
Satan: [sneers]
You're willing to give up your life so she can go to Heaven?
[John nods. Lucifer shuts his eyes for a moment]
Satan: Fine. It's done.
[chuckles]
Satan: Time to go, John.
John Constantine: Yeah.