The Geneva Bible Translation Notes, [1599], at sacred-texts.com
(a) Which was either a musical instrument or a solemn tune, to which this psalm was sung.
(b) In all manner of troubles God shows his speedy mercy and power in defending his.
Therefore will not we (c) fear, though the earth be removed, and though the mountains be carried into the midst of the sea;
(c) That is, we will not be overcome with fear.
[Though] the waters thereof (d) roar [and] be troubled, [though] the mountains shake with the swelling thereof. Selah.
(d) Though the afflictions rage, yet the rivers of God's mercies bring sufficient comfort to his.
[There is] a (e) river, the streams whereof shall make glad the city of God, the holy [place] of the tabernacles of the most High.
(e) The river of Shiloh, which passed through Jerusalem: meaning, though the defence seems small, yet if God has appointed it, it is sufficient.
God [is] in the midst of her; she shall not be moved: God shall help her, [and that] (f) right early.
(f) Always when need requires.
The LORD of hosts [is] (g) with us; the God of Jacob [is] our refuge. Selah.
(g) They are assured that God can and will defend his Church from all dangers and enemies.
Come, behold the works of the LORD, (h) what desolations he hath made in the earth.
(h) That is, how often he has destroyed his enemies, and delivered his people.
Be (i) still, and know that I [am] God: I will be exalted among the heathen, I will be exalted in the earth.
(i) He warns them who persecute the Church to cease their cruelty: for also they will feel that God is too strong for them against whom they fight.