Adam Clarke on Hebrews 10:31

It is a fearful thing to fall into the hands of the living God - To fall into the hands of God is to fall under his displeasure; and he who lives for ever can punish for ever. How dreadful to have the displeasure of an eternal, almighty Being to rest on the soul for ever! Apostates, and all the persecutors and enemies of God's cause and people, may expect the heaviest judgments of an incensed Deity: and these, not for a time, but through eternity.