John Gill Commentary Psalms 66:8

"Oh bless our God, ye peoples, And make the voice of his praise to be heard;" — Psalms 66:8 (ASV)

O bless our God, you people
In all countries, that know the Lord and fear him; ascribe blessing, and honour and glory, to Christ our God, on account of his works, actions, perfections, kingdom and power; and because of the destruction of those who are rebels to his government;

and make the voice of his praise to be heard ;
far and near, in psalms, and hymns, and spiritual songs; by shoutings, and loud acclamations of joy; see (Revelation 19:5Revelation 19:6) ; where Christ is called our God, and a like exhortation is made as here.