Passage
Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.
Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.
John 14:10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.
John 14:11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works’ sake.
John 14:12 Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.
John 14:13 And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son.
John 14:14 If ye shall ask any thing in my name, I will do it.
The verse centers on "believeth", "verily", "works", "shall", "greater", and "than". It is saying that the verse draws attention to "believeth" and "verily", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "Believe me that I am in the..." into verse 13's "And whatsoever ye shall ask in my...", so "believeth" and "verily" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "believeth" and "verily" with trust shaped by these words, not by a vague optimism outside the passage.