The first line of the refrain is "And He will raise you up on eagles' wings," sung to this phrase (the tune is also titled "On Eagles' Wings"):
There's an ascending melody with a rather large interval (a sixth) to reflect that "rais[ing]... up."
I also noticed a few things in the third verse: "You need not fear the terror of the night, / Nor the arrow that flies by day; / Though thousands fall about you, / Near you it shall not come." The middle two lines are sung to these phrases:
"Flies" and "thousands" are sung with melismas (C# B and A A Bb respectively), musically giving a sense of movement for "flies" and amount for "thousands."
