Do all you can to preserve your neighbor's life

This is the message you have heard from the beginning: Love one another. Do not be like Cain, who belonged to the Evil One and murdered his brother. And why did he murder him? Because his own works were evil, while those of his brother were righteous. Do not be surprised, brothers, if the world hates you. We know that we have crossed over from death to life, because we love our brothers. The one who does not love remains in death. Everyone who hates his brother is a murderer, and you know that no murderer has eternal life remaining in him. This is how we have come to know love: Jesus laid down his life for us. And we also should lay down our lives for our brothers. Whoever has worldly wealth and sees his brother in need but closes his heart against him—how can God’s love remain in him? Dear children, let us love not only with word or with our tongue, but also in action and truth.