'Certain' in the Bible

And by this we may be certain that we have knowledge of him, if we keep his laws.

But in every man who keeps his word, the love of God is made complete. By this we may be certain that we are in him:

Little children, it is the last hour; and as you were given word that the Antichrist would come, so now a number of Antichrists have come to you; and by this we are certain that it is the last hour.

My loved ones, now we are children of God, and at present it is not clear what we are to be. We are certain that at his revelation we will be like him; for we will see him as he is.

Anyone who has hate for his brother is a taker of life, and you may be certain that no taker of life has eternal life in him.

In this way we may be certain that we are true, and may give our heart comfort before him,

In this way, we are certain that we have love for the children of God, when we have love for God and keep his laws.

I have put these things in writing for you who have faith in the name of the Son of God, so that you may be certain that you have eternal life.

And we are certain that if we make any request to him which is right in his eyes, he will give ear to us:

And if we are certain that he gives ear to all our requests, we are equally certain that we will get our requests.

We are certain that one who is a child of God will do no sin, but the Son of God keeps him so that he is not touched by the Evil One.

We are certain that we are of God, but all the world is in the power of the Evil One.

And we are certain that the Son of God has come, and has given us a clear vision, so that we may see him who is true, and we are in him who is true, in his Son Jesus Christ. He is the true God and eternal life.