John 12:35-36

35 Jesus said to them, "The light is with you for a little longer. Walk while you have the light, so that the darkness may not overtake you. If you walk in the darkness, you do not know where you are going.
36 While you have the light, believe in the light, so that you may become children of light." After Jesus had said this, he departed and hid from them.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.