Psalms 41:13

Blessed be the Lord God of Israel A God in covenant with his people; who has done great and kind things for them, and has more and better in reserve; from everlasting to everlasting Or, from age to age, as long as the world lasts, and to all eternity. Amen and amen Amen, especially a double amen, signifies a hearty assent and approbation, and withal an earnest desire of the thing to which it is annexed. And as the Psalms are divided into five books, so each of them is closed with this word: the first here; the second, Psalms 72: the third, Psalms 89: the fourth, Psalms 106: the last in the end of Psalm cl: the doubling of the word shows the fervency of his spirit in this work of praising God.