Study of Peter 1& 2: Chapter 2 Verses 13-14...

13 suffering wrong as the wages of doing wrong. They count it a pleasure to revel in the daytime. They are stains and blemishes, reveling in their deceptions as they feast with you, 14 having eyes full of adultery that never cease from sin, enticing unstable souls, having hearts trained in greed, accursed children;

Verse 13

The KJ21 in the first part of the verse says and shall receive the reward of unrighteousness...

So, the first part of the verse talks about receiving the reward of unrighteousness. This has to refer to the sin they committed

Then it moves on in the verse talking about pleasure in revel refers as another version puts it means riot. This would be done during the daytime when they would riot.

The verse goes on to talk about that they would pollute themselves and defile others as well as the church.

They were deceiving the people.

While they were eating in food of charity.

and shall receive the reward of unrighteousness as those who count it pleasure to revel in the daytime. Spots they are and blemishes, sporting themselves with their own deceptions while they feast with you, 2 Peter 2:13 KJ21

suffering wrong [destined for punishment] as the wages of doing wrong. They count it a delight to revel in the daytime [living luxuriously]. They are stains and blemishes [on mankind], reveling in their deceptions even as they feast with you. 2 Peter 2:13

15 abandoning the right way, they have gone astray, having followed the way of Balaam, the son of Beor, who loved the reward of unrighteousness; 2 Peter 2:15

Verse 14

Adultery literally means adulteress.

People who cannot cease from sin.

They are leading people astray who were not fully grounded in God.

In goes on to talk about how they had several ways to seduce the people who would listen.

Curse children refers to the Greek children who were cursed.

having eyes full of adultery and who cannot cease from sin, beguiling unstable souls; their hearts they have exercised with covetous practices; accursed children! 2 peter 2:14 KJ21

They have eyes full of adultery, constantly looking for sin, enticing and luring away unstable souls. Having hearts trained in greed, [they are] children of a curse. 2 Peter 2:14 AMP

10 and said, “You who are full of all deceit and fraud, you son of the devil, you enemy of all righteousness, will you not stop making crooked the straight ways of the Lord? Acts 13:10