'Concerning' in the Bible

What was from the beginning,what we have heard,what we have seen with our eyes,what we have observedand have touched with our hands,concerning the Word of life—

These things have I written unto you concerning them that seduce you.

and you, the anointing that ye did receive from him, in you it doth remain, and ye have no need that any one may teach you, but as the same anointing doth teach you concerning all, and is true, and is not a lie, and even as was taught you, ye shall remain in him.

If the testimony of men we receive, the testimony of God is greater, because this is the testimony of God that He hath testified concerning His Son.

He who is believing in the Son of God, hath the testimony in himself; he who is not believing God, a liar hath made Him, because he hath not believed in the testimony that God hath testified concerning His Son;

If any one may see his brother sinning a sin not unto death, he shall ask, and He shall give to him life to those sinning not unto death; there is sin to death, not concerning it do I speak that he may beseech;