It does not violate the Constitution.
The Constitution is about establishing a state sanctioned church — a reason the founding fathers left their homes to come to America.
Then of course there is the Arkansas State Constitution to consider. Here's how it begins:
We, the People of the State of Arkansas, grateful to Almighty God for the privilege of choosing our own form of government; for our civil and religious liberty; and desiring to perpetuate its blessings, and secure the same to our selves and posterity; do ordain and establish this Constitution.