It's true!

"...If it were not so, I would have told you..." (John 14:2b)

With the cross only hours away, the Lord Jesus focused more and more quality time on His men, rather than the multitudes. Having told them of His leaving (13:33), He speaks peace to their troubled hearts (14:1), and reveals His plans to prepare a place for them to be with Him.
And in the process of promising heavenly dwellings, He adds a wonderful assurance: "if it were not so, I would have told you."
There must have been something in the disciples' expressions that prompted the Master to include this emphatic word of encouragement. And He knew what it was: fear of the unknown.
Why this lack of trust, especially in the light of the Lord's past faithfulness?
Primarily because we think God is like us. Although He has told us it is not so (Isaiah 55:8, 9), we still insist upon picturing Him in our image. People have lied to us, people have made promises they couldn't keep, as well as made fantastic claims concerning the future that did not come to pass.
How subtlely our enemy takes such disappointments and transfers them onto our perspective of the Lord. How much, then, like those disciples in the upper room, do we need to hear again our Master's assurance---- "if it were not so, I would have told you."