John 14:20 in the King James Version
At that day ye shall know that I am in my Father, and ye in me, and I in you.
Context
19 Yet a little while, and the world will see me no more; but you will see me. Because I live, you will live also.
20 In that day you will know that I am in my Father, and you in me, and I in you.
21 One who has my commandments and keeps them, that person is one who loves me. One who loves me will be loved by my Father, and I will love him, and will reveal myself to him.”