Q: What is forbidden in the fifth commandment?
A: The fifth commandment forbiddeth the neglecting of, or doing anything against, the honour and duty which belongeth to every one in their several places and relations.

Romans 13:7-8. Render therefore to all their dues: tribute to whom tribute is due; custom to whom custom; fear to whom fear; honour to whom honour. Owe no man any thing, but to love one another: for he that loveth another hath fulfilled the law.

Westminster Project - Thomas Watson's work on the fifth commandment