Probably to some extent, this concept of channels may have had some symbolism with the Nile. Ancient Egyptians were thought to be in good health if the metu were clear and without blockage.  Disease was caused when a channel became blocked, much like an irrigation canal cannot deliver water if it is blocked.  

In the final judgment portrayed by the Book of the Dead, the heart of the deceased was shown being weighed against the feather of Ma'at, a symbol of universal truth, harmony

Daniel 5:27 Te'kel': Thou art weighed in the balances, and art found wanting.

This is judgment day that we are in now.

1 Peter 4:17-18 For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God? And if the righteous scarcely be saved, where shall the ungodly and the sinner appear?