'Knowledge' in the Bible

For it is common knowledge among you that we never made use of smooth-sounding false words, and God is witness that at no time were we secretly desiring profit for ourselves,

For even when we were with you, we warned you plainly in advance that we were going to experience persecution; and so, as you know, it has come to pass.

not [to be used] in lustful passion, like the Gentiles who do not know God and are ignorant of His will;

For you yourselves have the knowledge that the day of the Lord will come like a thief in the night.