Isaiah
Isaiah 56:7BSB·traditional attribution

I will bring them to My holy mountain and make them joyful in My house of prayer. Their burnt offerings and sacrifices will be accepted on My altar, for My house will be called a house of prayer for all the nations.”

Matthew Henry Presbyterian @wholebiblehenry

The prophet is here, in God's name, encouraging those that were hearty in joining themselves to God and yet laboured under great discouragements. 1. Some were discouraged because they were not of the seed of Abraham. They had joined themselves to the Lord, and bound their souls with a bond to be his for ever (this is the root and life of religion, to break...

Commenting on Isaiah 56:3-8

John Gill Reformed Baptist @doctorgill

Even them will I bring to my holy mountain,.... The church, called a "mountain" for its height, visibility, and immovableness; see Isa 2:2, especially for the latter; the true members of it being such who are interested in the unchangeable love of God, in the immovable grace of election, in the unalterable covenant of grace, are on the Rock Christ Jesus, and are secured by...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Even them-- (Eph 2:11-13). to my holy mountain--Jerusalem, the seat of the Lord's throne in His coming kingdom (Isa 2:2; Jer 3:17). joyful-- (Rom 5:11). burnt offerings . . . sacrifices--spiritual, of which the literal were types (Rom 12:1; Heb 13:15; Pe1 2:5). accepted-- (Eph 1:6). altar-- (Heb 13:10), spiritually, the Cross of Christ, which sanctifies our sacrifices of prayer and praise. house . . .