The biblical understanding of God’s Word is not just that he speaks it, but that he acts through it. His words are not merely speech; they are deeds as well. This is clear of creation, which was effected by God’s words of command. ‘God said … and it was so’; ‘He spoke, and it came to be; he commanded, and it stood forth’ (Gn. 1:6-7; Ps. 33:9).  The same is true of salvation, which indeed is a new creation. For the same God who said ‘Let light shine out of darkness’ has shone in our hearts, revealing Christ to us (2 Cor. 4:6). His Word was creative; it brought to us both light and life.

–Dr. John R.W. Stott, The Authority and Power of the Bible