Are we true believers?

John the Apostle, from God, told of the love that a believer must have for others. John told them that they could tell if they were a believer in Christ by looking at their actions. If they loved one another, that was evidence of God’s presence in their lives. But if they bickered and fought all the time or were selfish and did not look out for one another, they were betraying that they, in fact, did not know God.