So, I think there's a typo...

"Splendour" is the UK spelling and "Splendor" is the US spelling.

Here at COSH, we decided to go with the US spelling of the noun as opposed to the UK spelling. We made this decision because it's the spelling that matches the spelling of the noun in the New International Version translation of Isaiah 62:3. Yes, indeed there is a typo — an intentional one. LOL!

All Praise be to Jesus Christ!

God bless you.

The COSH Team.