I am the vine, you are the branches. Those who abide in me and I in them bear much fruit, because apart from me you can do nothing. (NRSVCE John 15:5,8)
“The lamp of the body is the eye. If your eye is sound, your whole body will be filled with light; but if your eye is bad, your whole body will be in darkness. And if the light in you is darkness, how great will the darkness be.” Matthew 6:22–23