To show respect or fear.

For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh. This is a great mystery: but I speak concerning Christ and the church. Nevertheless let every one of you in particular so love his wife even as himself; and the wife see that she REVERENCE her husband. ( Ephesians 5:31-33 )

Dictionary of Words from the King James Bible. Public Domain. Copy freely.