“Yet a little while, and the world seeth Me no more; but ye see Me; because I live, ye shall live also.”- John 14:19

This was, and is, the mark of the true believer, that he see Jesus. When Jesus was here among men, the world saw Him in a certain sense, but yet in truth it did not see Him at all. The world’s eye saw the outside of Christ-the flesh of the man Christ, but the true Christ the ungodly eye could not discern. They could not perceive those wonderful attributes of character, those delightful graces and charms, which made up the true spiritual Christ. They saw but the husk, and not the kernel; they saw the quartz of the golden nugget, but not the pure gold which that quartz contained. They saw but the external man; the real, spiritual Christ they could not see. But unto as many as God had chosen, Christ manifested Himself as He did not unto the world.

Now, to this hour, this is the mark of the true Christian: this is to be of the elect: this is the very badge and symbol of the faithful-they see Jesus. They look beyond the clouds. Other men see the cloud and the darkness, and they wist not what it is; but these men with more than eagle eye pierce through the clouds of mere sensual impressions, and they see the glory that was always His, even the glory of the Only Begotten of the Father, full of grace and truth. Beloved, have you ever seen Jesus with the eye of faith? Have you ever perceived the glory of His person, and the beauty of His character? Have you so perceived Jesus as to trust in Him? Have you been so enamoured of Him as to have yielded yourselves to be His servants for ever? Do you take up His cross? Do you avow yourselves to be His followers, come what may? If so, then are ye saved; but if ye see not Christ with your spirit, neither do ye know Him, nor shall ye enjoy a portion with Him.~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3401.cfm