disquietness > trouble, unrest (cf. 1 Tim. 6.10)
3 First got with guile, and then preserved with dread, 4 And after spent with pride and lavishness, 5 Leaving behind them grief and heaviness.
heaviness > anger; sadness
6 Infinite mischiefs of them do arise:
of > from
7 Strife, and debate, bloodshed, and bitterness,
debate > quarrelling; fighting
8 Outrageous wrong, and hellish covetise,
covetise > covetousness, avarice
9 That noble heart as great dishonour does despise.