But (αλλα). Sharp contrast to verse Hebrews 12:18 with same form προσεληλυθατε.

Unto Mount Zion (Σιων ορε). Dative case of ορος, as with the other substantives. In contrast to Mount Sinai (verses Hebrews 12:18-21). Paul has contrasted Mount Sinai (present Jerusalem) with the Jerusalem above (heaven) in Galatians 4:21-31.

City (πολε). As in Hebrews 11:10; Hebrews 11:16. Heaven is termed thus a spiritual mountain and city.

The heavenly Jerusalem (Ιερουσαλεμ επουρανιω). See Hebrews 11:10; Hebrews 11:16; Isaiah 60:14.

Innumerable hosts of angels (μυριασιν αγγελων). "Myriads of angels." Μυριας is an old word (from μυριος, 1. Corinthians 4:15) as in Luke 12:1.