Charles H. Spurgeon on Psalms 119:172

My tongue shall speak of thy word. One duty of thankfulness promised by David is, to speak of God's words for the edification of others. Every Christian man, as he is a priest to offer sacrifice unto God, so is he a prophet to teach his brethren; for unto us all stands that commandment, "Edify one another in their most holy faith." But, alas, ye shall see many Christians now, who at their tables, and in their companies, can speak freely upon any subject; only for spiritual matters, which concern the soul, there they are dumb, and cannot say with David, "My tongue shall speak of thy word." William Cowper.

HINTS TO PREACHERS.