Question

Which pair of lines in this excerpt from Walter Scott’s "Lochinvar" brings out the theme of courageous heroism?

He rode all unarm’d, and he rode all alone.
So faithful in love, and so dauntless in war,

Among bride's-men, and kinsmen, and brothers and all:
Then spoke the bride's father, his hand on his sword,

"I long woo'd your daughter, my suit you denied;—
Love swells like the Solway, but ebbs like its tide—

There are maidens in Scotland more lovely by far,
That would gladly be bride to the young Lochinvar."