'Concerning' in the Bible

who then testified to everything that he saw concerning the word of God and the testimony about Jesus Christ.

Dismiss your fears concerning all that you are about to suffer. I tell you that the Devil is about to throw some of you into prison that you may be put to the test, and for ten days you will have to endure persecution. Be faithful to the End, even if you have to die, and then I will give you the victor's Wreath of Life.

And they *said to me, “You must prophesy again concerning many peoples and nations and tongues and kings.”

'I, Jesus did send my messenger to testify to you these things concerning the assemblies; I am the root and the offspring of David, the bright and morning star!