Let not your heart be troubled: you believe in God, believe also in me.
All Commentaries on John 14:1 Go To John 14
John Chrysostom
AD 407
Faith, too, in Me, and in the Father that begat Me, is more powerful than anything that shall come upon you; and will prevail in spite of all difficulties. He shows His divinity at the same time by discerning their inward feelings: Let not your heart be troubled.
Or thus: Our Lord having said above to Peter, Where I go, you can not follow Me now, but you shall follow Me afterwards, that they might not think that this promise was made to Peter only, He says, In My Father’s house are many mansions; i.e. You shall be admitted into that place, as well as Peter, for it contains abundance of mansions, which are ever ready to receive you: If it were not so, I would have told you: I go to prepare a place for you.
Having said, you can not follow Me now, that they might not think that they were cut off for ever, He adds: And if I go and prepare a place for you, I will come again area receive you to Myself, that where I am, there you may be also: a recommendation to them to place the strongest trust in Him.
He show them that He is aware of their curiosity to know His meaning, and thus excites them to pelt questions to Him.