Passage
Open the gates, that the righteous nation may enter: the one which keeps faith.
Isaiah 26:2 (WEB)
Nearby Context
Isaiah 26:1 In that day, this song will be sung in the land of Judah: “We have a strong city. God appoints salvation for walls and bulwarks.
Isaiah 26:2 Open the gates, that the righteous nation may enter: the one which keeps faith.
Isaiah 26:3 You will keep whoever’s mind is steadfast in perfect peace, because he trusts in you.
Isaiah 26:4 Trust in Yahweh forever; for in Yah, Yahweh, is an everlasting Rock.
Study Lenses
The verse centers on "faith", "open", "gates", "righteous", "nation", "enter", and "keeps". It is saying that the verse draws attention to "faith" and "open", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 1's "In that day this song will be..." into verse 3's "You will keep whoever s mind is...", so "faith" and "open" belong inside that flow. In Isaiah context, the local focus is the Holy One of Israel, judgment and restoration, the servant of the LORD, and Zion's hope.
A plain takeaway is to answer the verse's own emphasis on "faith" and "open" with trust shaped by these words, not by a vague optimism outside the passage.