Answer:
The two sets of lines that are enjambed in this excerpt from John Milton's Paradise Lost are
Lines 3-4
Say first, for Heav'n hides nothing from thy view
Nor the deep Tract of Hell, say first what cause
Mov'd our Grand Parents in that happy State,
Lines 6-7
Favour'd of Heav'n so highly, to fall off
From their Creator, and transgress his Will
For one restraint, Lords of the World besides?'
Explanation:
Enjambed lines are the ones that don't conclude the idea of the clause, it is instead continued in the next lines, where it may or may not conclude in case that it concludes it'll have a mark like a full stop or a comma if not it will be enjambed to the next line.