Fides et Firmus

The supporting verse for the Motto of Highway Alliance comes from Joshua 1:9
Have I not commanded you? Be strong and courageous. Do not be terrified; do not be discouraged, for the LORD your God will be with you wherever you go


Latin: Fides et Firmus

Look up: http://www.encyclo.co.uk/define/Fides

fides
Latin, meaning: promise, assurance, word of honor, engagement.
Found on http://archives.nd.edu/fff.htm

Latin, meaning: trust, confidence, reliance, belief, faith.
Found on http://archives.nd.edu/fff.htm

Fides
(Latin) a promise; word of honor.
Found on http://ablemedia.com/ctcweb/glossary/glo

firmus
Latin, meaning: firm, strong, reliable, solid.
Found on http://archives.nd.edu/fff.htm


Therefore, Fides et Firmus, in one context, reads as Faith and Strong (Strength/Steadfast).
In reverse, it could read as Steadfast Faith.