Original Verse:
Deuteronomy Chapter 25 Verse 9then shall his brother`s wife come unto him in the presence of the elders, and loose his shoe from off his foot, and spit in his face; and she shall answer and say, So shall it be done unto the man that doth not build up his brother`s house.

Reference Verses:
Ruth Chapter 4 Verse 7Now this was [the custom] in former time in Israel concerning redeeming and concerning exchanging, to confirm all things: a man drew off his shoe, and gave it to his neighbor; and this was the [manner of] attestation in Israel.
Job Chapter 30 Verse 10They abhor me, they stand aloof from me, And spare not to spit in my face.
Isaiah Chapter 50 Verse 6I gave my back to the smiters, and my cheeks to them that plucked off the hair; I hid not my face from shame and spitting.
Ruth Chapter 4 Verse 10Moreover Ruth the Moabitess, the wife of Mahlon, have I purchased to be my wife, to raise up the name of the dead upon his inheritance, that the name of the dead be not cut off from among his brethren, and from the gate of his place: ye are witnesses this day.
Numbers Chapter 12 Verse 14And Jehovah said unto Moses, If her father had but spit in her face, should she not be ashamed seven days? let her be shut up without the camp seven days, and after that she shall be brought in again.