Charles H. Spurgeon on Psalms 150:1

Praise God in his sanctuary. The Septuagint, Vulgate Latin, and the eastern versions, render it, "in his holy ones"; among his saints, in the assembly of them, where he is to be feared and praised: it may be translated, "in his Holy One", and be understood of Christ, as it is by Cocceius...Some render it, "for" or "because of his holiness." The perfection of holiness in him; in which he is glorious and fearful in the praises of, and which appears in all his works of providence and grace. —John Gill.