It has an influence over the life

(J. C. Philpot, "The Precepts of the Word of God")

"When you received the word of God, which you heard
 from us, you accepted it not as the word of men, but
 as it actually is, the word of God, which effectually
 works in you who believe." 1 Thessalonians 2:13

Where God's word effectually works in the heart,
it has an influence over the life. It . . .
  separates from the world and the spirit of it;
  keeps the consciences alive and tender in the fear of God;
  produces uprightness and integrity of conduct;
  extends its influence to the various relationships of life;
  subdues pride, covetousness, and selfishness;
  softens and meekens the spirit;
  gives tender feelings and gracious affections;
  fosters prayer, meditation, and spirituality of mind; and
  makes itself manifest in the life, walk, and conversation.