Written on the back
In Revelation 5:1, the book being written on the back signifies the Word in its general sense. (Apocalypse Revealed 256)
In Ezekiel 8:16, this signifies denial of the Lord God, one of the abominations of the decadent Jerusalem. (Apocalypse Explained 401[32])
Job 31:25-28
25
If I have rejoiced because my wealth was great, and because my hand had gotten much;
26
if I have seen the sun when it shined, or the moon moving in splendor,
27
and my heart has been secretly enticed, and my hand threw a kiss from my mouth,
28
this also would be an iniquity to be punished by the judges; for I should have denied the God who is above.
