He was speaking to His disciples.
Why yes He was telling them
whoever believed upon Him.
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.
That right there
defines you and I
and all others who
say they are of God.
Don't need any discernment
or wisdom
or anything
just 2 eyes.