WHY?! (The Thought)

2 Peter 1:10
Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall:


Ascertain;Find (something) out for certain; make sure"


Adamantine; Rigidly firm, Unyielding


Adamant;refusing to be persuaded or to change one's mind.