'Positively' in the Bible

I have not written to you because you do not know the truth, but because you do know it, and because no lie [nothing false, no deception] is of the truth.

And if we know [for a fact, as indeed we do] that He hears and listens to us in whatever we ask, we [also] know [with settled and absolute knowledge] that we have [granted to us] the requests which we have asked from Him.

We know [for a fact] that we are of God, and the whole world [around us] lies in the power of the evil one [opposing God and His precepts].

And we [have seen and] know [by personal experience] that the Son of God has [actually] come [to this world], and has given us understanding and insight so that we may [progressively and personally] know Him who is true; and we are in Him who is true—in His Son Jesus Christ. This is the true God and eternal life.