'Speak a Word' in the Bible

And the centurion answered and said, Lord, I am not fit that thou shouldest enter under my roof; but only speak a word, and my servant shall be healed.

And whosoever shall speak a word against the Son of man, it shall be forgiven him; but whosoever shall speak against the Holy Spirit, it shall not be forgiven him, neither in this world, nor in that which is to come.