Holiness is used of God’s Word similarly to the way it is used of God, namely, to be set apart from other things, to be sacred, to be exalted. Paul told Timothy, “From infancy you have known the holy Scriptures, which are able to make you wise for salvation through faith in Christ Jesus” (2 Tim. 3:15).
This verse is plain in its meaning, and is full of consolation. It is to be regarded as addressed primarily to the exiled Jews during their long and painful captivity in Babylon; and the idea is, that they who had been selected by God to be his special people had nothing to fear. But the promise is one that may be regarded as addressed to all his people in similar circumstances, and it is as true now as it was then, that those whom God has chosen have nothing to fear.