Verse 1
"To the chief musician, Al-Tashchet, of David, a Michtam, when Saul sent men, and they watched the house to kill him."
"Michtam" is a precious kind of psalm.
This heading, repeated at the start of each part, gives the background: Saul sent men to watch David's house and put him to death.
Verse 7
"They return at evening; they growl like a dog and prowl around the city."
"They growl" means they make a low, snarling sound; they circle the city again and again.
David pictures his enemies as hungry street dogs that return at nightfall, searching for prey without rest.
Verse 8
"Behold, they pour out with their mouth; swords are in their lips, for who, they think, hears?"
"Swords in their lips" are sharp, wounding words.
They are sure no one hears them — but David knows there is One who hears everything.
Verse 9
"But You, O Lord, will laugh at them; You will hold all the nations in derision."
"Laugh at them" means You mock them; "all the nations" means all the peoples.
Their strength, so great in their own eyes, is nothing before the Creator of all.
Verse 10
"Because of his strength I will wait for You, for God is my fortress."
"His strength" is the enemy's strength; "my fortress" is my high, safe stronghold.
David turns his gaze to the Lord alone. This is the heart of the song: the safest place is God Himself.
Verse 11
"The God of my mercy will go before me; God will let me look on my watchful foes."
"The God of my mercy" is my merciful God; "my watchful foes" are those who lie in wait for me.
David trusts that the merciful God will meet him before he even calls, and will show him that evil never wins.
Verse 12
"Do not kill them, lest my people forget; make them wander by Your power and bring them down, O Lord our shield."
"Make them wander" means cause them to stagger; "our shield" is the One who protects us.
David asks: do not wipe them out in a moment, lest the people forget; better they fall slowly, so all remember that the Lord is the shield.
This part teaches that real trust does not depend on the enemy disappearing, but on knowing that we have a high fortress evil cannot reach. David sees the dogs circling, hears the sharp words, and knows what waits outside — yet his heart is calm, because "God is my fortress." So a psalm born on a night of danger can be sung as a joyful, rhythmic, uplifting hymn, filled with trust.