By your words you will be justified.

 

Matthew 12:37(NKJV)

For by your words you will be justified, and by your words you will be condemned.”

 

I have written before questioning why Paul tells us that we have to say certain things to be saved while Jesus says it is a heart issue.  As long as your heart is right it is close enough. 

I wonder if the verse above is part of what Paul uses in his reasoning of why we have to say certain things.  If we don't actually say the words we can't be justified by them.