hell
Proverbs 27:20 Hell and destruction are never full; so the eyes of man are never satisfied.
Job 26:6 Hell is naked before him, and destruction has no covering.
Psalm 139:8 If I ascend up into heaven, you are there: if I make my bed in hell, behold, you are there.
Revelation 1:18 I am he that lives, and was dead; and, behold, I am alive for ever more, Amen; and have the keys of hell and of death.
the hearts
2 Chronicles 6:30 Then hear you from heaven your dwelling place, and forgive, and render to every man according to all his ways, whose heart you know...
Psalm 7:9 Oh let the wickedness of the wicked come to an end; but establish the just: for the righteous God tries the hearts and reins.
Psalm 44:21 Shall not God search this out? for he knows the secrets of the heart.
Jeremiah 17:10 I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings.
John 2:24,25 But Jesus did not commit himself to them, because he knew all men...
John 21:17 He said to him the third time, Simon, son of Jonas, love you me? Peter was grieved because he said to him the third time, Love you me?...
Hebrews 4:13 Neither is there any creature that is not manifest in his sight...
Revelation 2:23 And I will kill her children with death; and all the churches shall know that I am he which searches the reins and hearts...