1 John 4:20

If anyone says, “I love God,” and hates (works against) his (Christian) brother he is a liar; for the one who does not love his brother who he has seen, cannot love God who he has not seen. 

Somedays, we need to take stock of our own hearts. Are we living up to God’s standard of love, or have we become resentful, angry, jealous, or bitter toward someone? Sin is sneaky that way, and offense, in any way, can separate from God’s love. It takes one decision to forgive and turn back to love.