# You made your souls pure

"You made yourselves pure" 

# pure

Here the idea of cleanliness refers to being acceptable to God.

# by obedience to the truth

"by obeying the truth"

# brotherly love

This refers to love between fellow believers.

# love one another earnestly from a pure heart

To love someone "from a pure heart" means to love some one completely with total commitment. Alternate translation: "love one another earnestly and completely"