'Certainty' in the Bible
know and understand with certainty that the Lord your God will not continue to drive these nations out from before you; but they will be a snare and trap to you, and a whip on your sides and thorns in your eyes, until you perish from this good land which the Lord your God has given you.
For on the day you leave and cross over the Brook Kidron, know for certain that you shall surely die; your blood shall be on your own head.”
So the king sent word and called for Shimei and said to him, “Did I not make you swear by the Lord and solemnly warn you, saying, ‘Know for certain that on the day you leave [Jerusalem] and go anywhere, you shall surely die’? And you said to me, ‘The word (ruling) I have heard is good.’
To let you know the certainty of the words of truth,That you may give a correct answer to him who sent you?
But there will be no more gloom for her who was in anguish [for with judgment comes the promise of salvation]. In earlier times He treated the land of Zebulun and the land of Naphtali with contempt, but later on He will make them honored [by the presence of the Messiah], by the way of the sea, on the other side of Jordan, Galilee of the Gentiles.
The Lord has spoken to you, O remnant of Judah, “Do not go into Egypt!” Know with certainty that I [Jeremiah] have warned you and testified to you this day
Now therefore know for certain that you will die by the sword, by famine, and by virulent disease in the land [of Egypt] where you wish to reside [temporarily].
The king replied, “I know for certain that you are bargaining for time, because you have seen that my command [to you] is firm and irrevocable.
so that you may know the exact truth about the things you have been taught [that is, the history and doctrine of the faith].
knowing [with all certainty] that it is from the Lord [not from men] that you will receive the inheritance which is your [greatest] reward. It is the Lord Christ whom you [actually] serve.
for our good news [regarding salvation] came to you not only in word, but also in [its inherent] power and in the Holy Spirit and with great conviction [on our part]. You know what kind of men we proved to be among you for your benefit.
This hope [this confident assurance] we have as an anchor of the soul [it cannot slip and it cannot break down under whatever pressure bears upon it]—a safe and steadfast hope that enters within the veil [of the heavenly temple, that most Holy Place in which the very presence of God dwells],
You too, be patient; strengthen your hearts [keep them energized and firmly committed to God], because the coming of the Lord is near.