en_tn/1jn/03/19.md

Connecting Statement:

Here John probably means that believers' ability to love God and each other sincerely (See: 1 John 3:18) is a sign that their new life has indeed originated from the truth about Christ.

we are from the truth

"we belong to the truth" or Alternate translation: "we are living according the way Jesus taught us"

we assure our hearts

The word "heart" here refers to feelings. Alternate translation: "we do not feel guilty" (See: rc://en/ta/man/translate/figs-metonymy)