<p>14:20- see on Jn. 17:7.</p><p><i>In that day, you shall truly know that I am in my Father, and you in me and I in you</i>- The &quot;truth&quot; in to which they would be guided by the Comforter, &quot;the spirit of truth&quot;, would not be intellectual purity of understanding, but the knowledge or seeing of the Father and Son. And they would also &quot;know&quot; that &quot;I am in you&quot;. This promise is often alluded to by John when later writing to the converts made from hearing or reading his Gospel record. For he writes about &quot;hereby we know that he abides in us, by the Spirit which he has given us&quot; (1 Jn. 3:24; 4:13; also alluded to in 1 Jn. 2:3,5; 3:19; 4:6). So the knowledge that the Son dwells in us is from the experience of the Spirit. &quot;That day&quot; therefore refers to the day when the Spirit would be given, and they would 'see' the Lord ever before them and have His personal presence within them (:19).</p>