Charles H. Spurgeon on Psalms 118:15

The voice of rejoicing and salvation is in the tabernacles of the righteous. They sympathised in the delight of their leader and they abode in their tents in peace, rejoicing that one had been raised up who, in the name of the Lord, would protect them from their adversaries. The families of believers are happy, and they should take pains to give their happiness a voice by their family devotion. The dwelling place of saved men should be the temple of praise; it is but righteous that the righteous should praise the righteous God, who is their righteousness. The struggling hero knew that the voice of woe and lamentation was heard in the tents of his adversaries, for they had suffered severe defeat at his hands; but he was delighted by the remembrance that the nation for whom he had struggled would rejoice from one end of the land to the other at the deliverance which God had wrought by his means. That hero of heroes, the conquering Saviour, gives to all the families of his people abundant reasons for incessant song now that he has led captivity captive and ascended up on high. Let none of us be silent in our households: if we have salvation let us have joy, and if we have joy let us give it a tongue wherewith it may magnify the Lord. If we hearken carefully to the music which comes from Israel's tents, we shall catch a stanza to this effect, the right hand of the Lord doeth valiantly: Jehovah has manifested his strength, given victory to his chosen champion, and overthrown all the armies of the foe. "The Lord is a man of war, the Lord is his name." When he comes to blows, woe to his mightiest opponent.