(I am sure that this question has been asked before on this forum, but the members come and go. So, I think it would be fun to serve it up again.)
To say that you know something "for certain" or with absolute knowledge, is pretty strong language. So when you say that you know this for certain, what does that mean exactly?
- Does it mean that you are fully convinced?
- Do you know because of some specific evidence? (If so, please share)
- Is it just strong faith?
- Something else?
I will share my thoughts later, but I thought that I would just get the ball rolling first.
I am both fully convinced by reason, and know because of specific evidence.
At one point I can say that I simply believed -which is what many call faith -but have found that faith is much different.
I'll explain more later, but consider the experience of Saul. He believed in God to some degree -but acted against God on behalf of those who were to be acting for God.
He did not know God -did not understand the truth -and didn't really have true faith.
While it is true that faith is the
substance of things
not seen, that does not mean it is not based on things which are very real -or based on things seen or experienced previously.
Few have ever seen an electron -but can know it exists due to other things.
Joh 20:29 Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed are they that have not seen, and yet have believed.
If one NEVER believes what they don't see, they don't get very far even in worldly matters.
Saul experienced something very real -as had Thomas experienced other things before he doubted.
Saul then had reason to take the matter very seriously -and examine his beliefs and practices.
Faith begins -and is then strengthened by both reason and experience -to the point that something can be known without seeing -even if one does not yet know everything about what they know.
Rom 1:17 For therein is the righteousness of God revealed
from faith to faith: as it is written, The just shall live by faith.
Then -one can confidently make decisions based on what is known -but not actually seen.
Those who have faith are first called by God -then come to God -beginning with the belief that he exists.
Heb 11:6 But without faith it is impossible to please him: for he that
cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.
Even though Abraham knew not where he was going -he had experienced enough beforehand to confidently do so.
Heb 11:8 By faith Abraham, when he was called to go out into a place which he should after receive for an inheritance, obeyed; and he went out, not knowing whither he went.
Belief is the having the idea that God exists -faith is being certain enough to do the will of God regardless of situation -and knowing that regardless of the immediate outcome it is worthwhile.
Sometimes God might keep the lions from eating you -sometimes he might not -but in either case you will be resurrected and rewarded for diligently seeking him.