Job's Sons Celebrated Birthdays
Job was a blameless and upright man (see Job 1:1) and, therefore, raised his children properly. and the evidence indicates that his sons - and most probably Job, as well - celebrated birthdays.
And his sons went and rested in their houses, everyone his day; and sent and called for their three sisters to eat and drink with them. (Job 1:4, KJV)
Strong's Exhaustive Concordance of the Bible indicates that the word interpreted as "day" (yowm) in this scripture can be used figuratively as a space of time and can be rendered, with other Hebrew words (such as "his") to mean birthday. The Revised Standard Version is a better translation of this verse:
His sons used to go and hold a feast in the house of each on his day; and they would send and invite their three sisters to eat and drink with them.
But, The Living Bible probably gets to the meaning, of what is meant, best of all:
Every year when each of Job's sons had a birthday, he invited his brothers and sisters to his house for a celebration. On these occasions they would eat and drink with great merriment.
I have never agreed with the Watchtower stand on this passage from Job, eventhough they admit they dont know 100% they say it indicates them celebrating each their harvest day. Yeah right!!
This scripture indicates that birthdays was celebrated.
If you want to go on the root of paganism, well let me name a few things that are pagan that JW's seem to accept:
The days of the week are named by pagan gods,
Rings are pagan,
A wedding veil was worn by pagans to warn of wicked spirtis in a marriage,
Wearing a white wedding dress has pagan roots,
I have alist that goes on and on.
Anniversary has the same concept as birthdays it is an annual celebration, it is the same thing!!