John 14:15 – 17
New International Version (NIV)
Jesus Promises the Holy Spirit
15 &ldqIf you love me, keep my commands. 16 And I will ask the Father, and he will give you another advocate to help you and be with you forever — 17 the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you.
From BibleGateway.com: http://www.biblegateway.com/passage/?search=John+14.15-17&version=NIV