# Whoever goes on ahead

This refers to a person who claims to know more about God and truth than everyone else. AT: "Whoever claims to know more about God" or "Whoever disobeys the truth"

# does not have God

"does not belong to God"

# The one who remains in the teaching, this one has both the Father and the Son

"Someone who follows Christ's teaching belongs to both the Father and the Son"

# the Father and the Son

These are important titles that describe the relationship between God and Jesus. (See: [[rc://en/ta/man/translate/guidelines-sonofgodprinciples]])

# receive him into your house

Here this means to welcome him and treat him with honor in order to build a relationship with him.

# participates in his evil deeds

"shares with him in his evil deeds" or "helps him in his evil deeds"