Walt Whitman: A Song of the Rolling Earth, Part 4

Part 4

These to echo the tones of souls and the phrases of souls, (If they did not echo the phrases of souls what were they then? If they had not reference to you in especial what were they then?)
I swear I will never henceforth have to do with the faith that tells     the best, I will have to do only with that faith that leaves the best untold.
Say on, sayers! sing on, singers! Delve! mould! pile the words of the earth! Work on, age after age, nothing is to be lost, It may have to wait long, but it will certainly come in use, When the materials are all prepared and ready, the architects shall appear.
I swear to you the architects shall appear without fall, I swear to you they will understand you and justify you, The greatest among them shall be he who best knows you, and encloses     all and is faithful to all, He and the rest shall not forget you, they shall perceive that you     are not an iota less than they, You shall be fully glorified in them.