## do not believe every spirit ##

In 4:1-3 the word "spirit" refers to a spiritual power or being that gives a person a message or prophecy. This could be translated as "do not trust every prophet who claims to have a message from a spirit."

## but test the spirits ##

This could be translated "but be sure to listen carefully to what the prophet says."

## has come in the flesh ##

"has taken on human form" or "has come in a physical body"

## This is the spirit of the antichrist ##

This could be translated  “They are teachers who oppose Christ ” (UDB)

## which you have heard is coming ##

This could be translated  “You have heard that people like that are coming among us.”

## and now is already in the world. ##

This could be translated “Even now they are already here!” (UDB)