TET is the 9th letter of the Hebrew language representing evil, the serpent,
and judgment. The dual meaning of Tet is seen in God's objective goodness
working through the permissive will of sinful men.
The banner depicts the judgment of God that rested upon the Messiah, who bore
our sin and the sin of the world. As the serpent represents evil, so God's
goodness is seen in the redemptive purposes of God fulfilled. As the serpent
on the pole was raised in the desert, so was Messiah. (Numbers 21:9, Isaiah 53:5, John 12)