Let them exalt him also - Let them lift up his name on high; let them make it conspicuous. The word means “to lift up,” and is applied to praise because we thus, as it were, “lift up” God, or make him conspicuous.
In the congregation of the people - Not merely in private, but in public. As his doings are public and conspicuous - as they pertain to all - people should acknowledge him in their public capacity, or when assembled together.
And praise him in the assembly of the elders - The old men; the men eminent for experience and wisdom. Perhaps this refers to those who occupied some official position in public worship, as appointed to preside over that worship, and to conduct it. We know that the arrangement was early made to appoint a body of aged men to preside over the assemblies for worship, and to direct the devotions of the people. In the presence of such venerable and venerated men, they are here exhorted to give due praise to God. The “reason” for this seems to be partly drawn from what had been referred to in the previous verses - the power of God as seen in stilling the tempests of the ocean; and partly from what is immediately referred to - the blessing of God on the labors of man in cultivating the earth.