'Certain' in the Bible

You may be certain, my brothers, that it has frequently been in my mind to come to you (but till now I was kept from it), so that I might have some fruit from you in the same way as I have had it from the other nations.

for what, if certain were faithless? shall their faithlessness the faithfulness of god make useless?

and not, as we are evil spoken of, and as certain affirm us to say -- 'We may do the evil things, that the good ones may come?' whose judgment is righteous.

For this reason it is by faith, in order that it may be in accordance with grace, so that the promise will be guaranteed to all the descendants, not only to those who are of the Law, but also to those who are of the faith of Abraham, who is the father of us all,

And being certain that God was able to keep his word.

Therefore, since we have now been justified [declared free of the guilt of sin] by His blood, [how much more certain is it that] we will be saved from the wrath of God through Him.

For if while we were enemies we were reconciled to God through the death of His Son, it is much more certain, having been reconciled, that we will be saved [from the consequences of sin] by His life [that is, we will be saved because Christ lives today].

For I am certain that not death, or life, or angels, or rulers, or things present, or things to come, or powers,

For I testify about them that they have a certain enthusiasm for God, but not in accordance with [correct and vital] knowledge [about Him and His purposes].

And if certain of the branches were broken off, and thou, being a wild olive tree, wast graffed in among them, and a fellow-partaker of the root and of the fatness of the olive tree didst become --

The person who eats any kind of food must not ridicule the person who does not eat them, and the person who does not eat certain foods must not criticize the person who eats them, for God has accepted him.

This man puts one day before another: to that man they are the same. Let every man be certain in his mind.

He who regards the day as sacred, so regards it for the Master's sake; and he who eats certain food eats it for the Master's sake, for he gives thanks to God; and he who refrains from eating it refrains for the Master's sake, and he also gives thanks to God.

I am conscious of this, and am certain in the Lord Jesus, that nothing is unclean in itself; but for the man in whose opinion it is unclean, for him it is unclean.

And I myself am certain of you, brothers, that you are full of what is good, complete in all knowledge, able to give direction to one another.

For it hath pleased them of Macedonia and Achaia to make a certain contribution for the poor saints which are at Jerusalem.

And I am certain that when I come, I will be full of the blessing of Christ.