John 2:17

Then Jesus' disciples remembered that it was written [Psa. 69:9], "Enthusiasm for Your [i.e., God's] house [i.e., the Temple] will consume me."

Romans 9:27

And Isaiah declares about [the nation of] Israel [Isa. 10:22-23], "[Even] if the number of Israelites were [as many] as the grains of sand in the ocean, [still only] a small minority will be saved.

Romans 11:5

So, now also, there is a small minority which has been selected by God's unearned favor [i.e., to be saved].

Treasury of Scripture Knowledge

Summary

For out of Jerusalem shall go forth a remnant, and they that escape out of mount Zion: the zeal of the LORD of hosts shall do this.

Bible References

For

Romans 9:27
And Isaiah declares about [the nation of] Israel [Isa. 10:22-23], "[Even] if the number of Israelites were [as many] as the grains of sand in the ocean, [still only] a small minority will be saved.
Romans 11:5
So, now also, there is a small minority which has been selected by God's unearned favor [i.e., to be saved].