Charles H. Spurgeon on Psalms 19:3

"There is no speech nor language, where their voice is not heard." Every man may hear the voices of the stars. Many are the languages of terrestrials, to celestials there is but one, and that one may be understood by every willing mind. The lowest heathen are without excuse, if they do not discover the invisible things of God in the works which he has made. Sun, moon, and stars are God's traveling preachers; they are apostles upon their journey confirming those who regard the Lord, and judges on circuit condemning those who worship idols.

The margin gives us another rendering, which is more literal, and involves less repetition; "no speech, no words, their voice is not heard;" that is to say, their teaching is not addressed to the ear, and is not uttered in articulate sounds; it is pictorial, and directed to the eye and heart; it touches not the sense by which faith comes, for faith cometh by hearing. Jesus Christ is called the Word, for he is a far more distinct display of Godhead than all the heavens can afford; they are, after all, but dumb instructors; neither star nor sun can arrive at a word, but Jesus is the express image of Jehovah's person, and his name is the Word of God.