John Gill Commentary Psalms 86:9

"All nations whom thou hast made shall come and worship before thee, O Lord; And they shall glorify thy name." — Psalms 86:9 (ASV)

All nations whom thou hast made
All nations, or the inhabitants of all nations, are made by the Lord, and of the blood of one man, (Acts 17:26) , and which as it shows the obligation of all men to come and worship, as is said should be; so likewise that the Lord, who has made them, is able to make them come to do homage to him, as follows:

shall come and worship before thee, O Lord ;
"come", spiritually, by faith and repentance, to the Lord himself, being drawn by the power of his efficacious grace through the ministry of the word; and, locally, to the house and ordinances of God, to attend upon them, and wait on him in them; and "worship" both externally, according to his revealed will; and internally in the exercise of grace, in spirit and in truth: this is prophetically said of the conversion of the Gentiles in Gospel times, especially in the latter day; see (Revelation 15:4) . Kimchi and Arama say this will be in the time of the Messiah:

and shall glorify thy name ;
the Lord himself, with their bodies and spirits, which are his; and ascribe the glory of their salvation to him, and glorify him for his mercy towards them in their redemption and conversion; glorify that and every perfection of his, displayed in their salvation; and also his Gospel, which brings them the news of it; see (Romans 15:9) (Acts 13:48) .