Justin (somewhat inaccurately) reproduces the figure:--

"And our hearts are thus circumcised from evil, so that we are happy
to die for the name of the Good Rock, which causes living water to
burst forth for the hearts of those who by him have loved the Father
of all, and which gives those who are willing to drink of the water
of life." (Dial. ch. cxiv.)

Again, St. John alone records that Christ spake of Himself as the Light,
and Justin speaks of Him as "the only blameless and righteous Light sent
by God." (Dial. ch. xvii.)

Again, St. John alone speaks of our Lord as representing Himself to be
the true vine, and His people as the branches. Justin uses the same
figure with respect to the people or Church of God:--

"Just as if one should eat away the fruit-bearing parts of it vine,
it grows up again, and yields other branches flourishing and
fruitful; even so the same thing happens to us. For the vine planted
by God and Christ the Saviour is His People." (Dial. ch. cx.)

Again, St. John alone represents our Saviour as saying, "I have power to
lay [my life] down, and I have power to take it again. This commandment
have I received of my Father." (John x. 18) And Justin says of Christ
that, in fulfilment of a certain prophecy,--

"He is to do something worthy of praise and wonderment, being about
to rise again from the dead on the third day after the Crucifixion,
and this He has obtained from the Father." (Dial. ch. c.)