'Concerning' in the Bible

Then the [tribe of the] sons of Judah approached Joshua in Gilgal, and Caleb the son of Jephunneh the Kenizzite said to him, “You know the word which the Lord said to Moses the man of God concerning me and you in Kadesh-barnea.

“Now behold, today I am going the way of all the earth, and you know in all your hearts and in all your souls that not one word of all the good words which the Lord your God has promised concerning you has failed; all have been fulfilled for you, not one of them has failed.