Matthew Poole and continuators on Zechariah 14:16

16 ¶ And it shall come to pass, that every one that is left of all the nations which came against Jerusalem, shall even go up from year to year to worship the King the LORD of hosts, and to keep the feast of tabernacles .

Such as escape the stroke, and are by mercy reserved, very many of them, among all the Nations, shall consider Gods hand, repent, and submit themselves to his Law, they shall (as many did) on sight of Gods hand for the Church, and against the Churches Enemies, convert became Proselytes and Christians.

By a ceremonial phrase and usage, which shadow'd out a better worship, the Prophet foretells the constant Zeal and care the converted Gentiles should have to worship the Lord.

One solemn Festival, by a figure, put for all the dayes consecrated to God for holy Worship, and this perhaps with an eye to Christ's Tabernacling with us, and may point to the Christian Sabbath.

Marginal references: Isa. 66.23.; Lev. 23.34, 43. Hos. 12.9. Joh. 7.2.