THE GOSPEL ACCORDING TO JOHN - Chapter 14 - Verse 20

Verse 20. At that day. In the time when my life shall be fully manifested to you, and you shall receive the assurance that I live. This refers to the time after his resurrection, and to the manifestations which in various ways he would make that he was alive.

That I am in my Father, &c. That we are most intimately and indissolubly united. See Barnes "Joh 10:38".

Ye in me. That there is a union between us which can never be severed. See Barnes "Joh 15:1, also Joh 15:2-7.