'Concerning' in the Bible

That which was from the beginning, that which we have heard, which we have seen with our eyes; that which we contemplated, and our hands handled, concerning the word of life;

These things have I written to you concerning those who lead you astray:

If we receive the witness of men, the witness of God is greater. For this is the witness of God which he has witnessed concerning his Son.

He that believes on the Son of God has the witness in himself; he that does not believe God has made him a liar, because he has not believed in the witness which God has witnessed concerning his Son.