2 Peter 2:1 But there were also false prophets in Israel, just as there will be false teachers among you. They will cleverly teach destructive heresies and even deny the Master who bought them. In this way, they will bring sudden destruction on themselves.

There were false teachers for then just as there are now. We must always be alert for false teaching. This is why Bible Study is so important, without it you’ll believe anything!
Let’s live on guard today!