Sir Ambrose Fleming, a famous British scientist, said: "We must not build on the sands of an uncertain and ever-changing science, but on the rock of the inspired Scriptures, which do not comprise the guesses of fallible minds, but the utterances of holy men of God who spoke by the Holy Spirit."
Listen to the witness of some of these "holy men of God." They speak with certainty.
Solomon, who was wiser than all other men, said: Have not I written to thee excellent things in counsels and knowledge, that I might make thee KNOW THE CERTAINTY of the words of truth; that thou mightest answer the words of truth to them that send unto thee?
Luke, the Evangelist, wrote: It seemed good to me... to write... that thou mightest KNOW THE CERTAINTY of those things, wherein thou hast been instructed.
Job, the Patriarch, said: I KNOW that my Redeemer liveth, and that He shall stand at the latter day upon the earth.
Paul, the Apostle, said: I KNOW whom I have believed, and am persuaded that He is able to keep that which I have committed unto Him against that day.
John, the beloved Disciple, said: We have KNOWN and believed the love that God hath to us. God is love.
Let the authoritative statement of the Apostle Paul be accepted and believed: Be it KNOWN unto you...that through this man is preached unto you the forgiveness of sins: and by Him all that believe are justified from all things.
The word of the Lord endureth forever. 1 Peter 1:25