Psalms 100:1

Here, I. The exhortations to praise are very importunate. The psalm does indeed answer to the title, A psalm of praise; it begins with that call which of late we have several times met with (Psa 100:1), Make a joyful noise unto the Lord, all you lands, or all the earth, all the inhabitants of the earth. When all nations shall be discipled, and the gospel preached to every creature, then this summons will be fully answered to. But, if we take the foregoing psalm to be (as we have opened it) a call to the Jewish church to rejoice in the administration of God's kingdom, which they were under (as the four psalms before it were calculated for the days of the Messiah), this psalm, perhaps, was intended for proselytes, that came over out of all lands to the Jews' religion. However, we have here, 1. A strong invitation to worship God; not that God needs us, or any thing we have or can do, but it is his will that we should serve the Lord, should devote ourselves to his service and employ ourselves in it; and that we should not only serve him in all instances of obedience to his law, but that we should come before his presence in the ordinances which he has appointed and in which he has promised to manifest himself (Psa 100:2), that we should enter into his gates and into his courts (Psa 100:4), that we should attend upon him among…

— Matthew Henry's Concise Commentary (public domain)