John 14:15-17 New Revised Standard Version, Anglicised Catholic Edition (NRSVACE)
The Promise of the Holy Spirit
15 ‘If you love me, you will keep[a] my commandments. 16 And I will ask the Father, and he will give you another Advocate,[b] to be with you for ever. 17 This is the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him. You know him, because he abides with you, and he will be in[c] you.