Come now, and let us reason together, saith the LORD.

"Come now, and let us reason together, 

saith the LORD...." Isa 1:18a

"Produce your cause, saith the LORD; 

bring forth your strong reasons, 

saith the King of Jacob." Isa 41:21

"Prove all things; hold fast that which is good." 

1Th 5:21

"But sanctify the Lord God in your hearts: 

and be ready always to give an answer 

to every man that asketh you

 a reason of the hope that is in you 

with meekness and fear."1Pet 3:15

Go to link and download this 138-slide on the subject:
The Logic of Faith. 
http://www.letgodbetrue.com/pdf/reasoning-in-the-scriptures.pdf