A. God is omnipotent & does whatever He wills:

PSA 75:6. For promotion cometh neither from the east, nor from the west, nor from the south.

PSA 75:7. But God is the judge: he putteth down one, and setteth up another.

DAN 4:17. This matter is by the decree of the watchers, and the demand by the word of the holy ones: to the intent that the living may know that the most High ruleth in the kingdom of men, and giveth it to whomsoever he will, and setteth up over it the basest of men.

DAN 4:35. And all the inhabitants of the earth are reputed as nothing: and he doeth according to his will in the army of heaven, and among the inhabitants of the earth: and none can stay his hand, or say unto him, What doest thou?

ACT 5:38. And now I say unto you, Refrain from these men, and let them alone: for if this counsel or this work be of men, it will come to nought:

ACT 5:39. But if it be of God, ye cannot overthrow it; lest haply ye be found even to fight against God.

ROM 9:15. For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.

ROM 9:16. So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.

ROM 9:17. For the scripture saith unto Pharaoh, Even for this same purpose have I raised thee up, that I might shew my power in thee, and that my name might be declared throughout all the earth.

ROM 9:18. Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth.

EPH 1:11. In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will:

B. Even seeming bad things happen only by God's will:

JOB 2:3. And the LORD said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil? and still he holdeth fast his integrity, although thou movedst me against him, to destroy him without cause.

JOB 2:4. And Satan answered the LORD, and said, Skin for skin, yea, all that a man hath will he give for his life.

JOB 2:5. But put forth thine hand now, and touch his bone and his flesh, and he will curse thee to thy face.

JOB 2:6. And the LORD said unto Satan, Behold, he is in thine hand; but save his life.

ACT 2:23. Him, being delivered by the determinate counsel and foreknowledge of God, ye have taken, and by wicked hands have crucified and slain:

1PE 4:19. Wherefore let them that suffer according to the will of God commit the keeping of their souls to him in well doing, as unto a faithful Creator.