Charles H. Spurgeon on Psalms 105:1

O give thanks unto the Lord. Jehovah is the author of all our benefits, therefore let him have all our gratitude. Call upon his name, or call him by his name; proclaim his titles and fill the world with his renown. Make known his deeds among the people, or among the nations. Let the heathen hear of our God, that they may forsake their idols and learn to worship him. The removal of the ark was a fit occasion for proclaiming aloud the glories of the Great King, and for publishing to all mankind the greatness of his doings, for it had a history in connection with the nations which it was well for them to remember with reverence. The rest of the psalm is a sermon, of which these first verses constitute the text.