'Unaware' in the Bible

I do not want you to be unaware, brothers and sisters, that I often intended to come to you (and was prevented until now), so that I may have some fruit even among you, just as I already have among the rest of the Gentiles.

For I do not want you to be unaware, brothers and sisters, that our fathers were all under the cloud and all passed through the sea,

For we do not want you to be unaware, brothers and sisters, regarding the affliction that happened to us in the province of Asia, that we were burdened excessively, beyond our strength, so that we despaired even of living.