By this we know what love is: Jesus laid down His life for us, and we ought to lay down our lives for our brothers. — 1 John 3:16

Here's how we know what love really is: Christ laid down his life for us. This isn't a vague sentiment—it's the cross, where God's love was put on public display. Paul prayed we'd grasp the breadth and length and depth of this love that surpasses knowledge. And here's the kicker: because he first loved us, we can't help but lay down our lives for the brothers.