I believe that the Lord has given us the ‘key’ to love in this passage. Timothy tells us to endeavor to have a pure (unadulterated) heart, and a good conscience (ethics, integrity, principles, sense of right and wrong). However, we all know that it is difficult to live up to this in our daily lives, as we face life’s challenges. I believe the answer is for us to remember that the Lord is pure love, 100% of the time! And to grow as ‘loving’ humans, we need to grow in our ‘sincere faith’ in the Lord.