On behalf of ALL the other LG deities, my sisters MISHAKAL & IOMEDAE, and my brothers HEIRONEUS, TYR and LATHANDER, I have been chosen to dictate our Code of Conduct for Paladins, to end all ambiguities, questions, concerns and arguments.
This is the LAW:
1} Thall shall not be a dick to the other PCs. Many of you will be our arms and light on the Prime Material Plane, adventuring with PCs that aren't like you. Don't be a dick in your relationships with them. You will cause MORE problems than those you solve; in fact, you'll probably not solve any and create many.
2} Thall shall not be a dick to the DM and its campaign. Many of the DMs you will encounter will have slightly different views of Law and Good for its monsters and fiends and NPCs than you have. Be perceptive of those and do accordingly.
3} Remember Laws 1 and 2 and only then,... Thall shall be Lawful Good according to how YOU define Lawful and Good. Just don't be a dick.
These are the words of your LG GODS!
OBEY!