As the mountains surround Jerusalem, so the Lord surrounds his people now and for ever.” (Psalm 125:2, GNB)

This psalm is one of the “song of ascents” that the Hebrews would sing as they climbed the hills towards Jerusalem, heading to the temple for one of the three great feasts each year.  One can imagine them as they make there way into the hills singing these words which remind them of God’s providence and care for his people. “We are his people and the sheep of his pasture” writes the psalmist in Ps. 100.3, expressing much the same truth in a different metaphor

The mountains were solid and from a human framework lasted much longer than the life of one person, this was a reminder that God’s care for his people extended from the present into the eternity future, into forever.

When it is the Lord that does the surrounding, then his people need not fear anything or anyone.