What does God require in the second commandment?

Heidelberg Catechism (extended)

The Catechism
Method of Instruction in the Christian Religion
As the Same is Taught in the Reformed Churches and Schools

(with the Scripture references written out)

Note. This Catechism is fully based on the Scriptures. The references to Scripture are indicated in parentheses with a letter. For example, the letter (a) points to the texts (a) placed after the answer.

35. Lord's Day 

 Q. 96. What does God require in the second commandment? 

A. That we in no wise represent God by images, (a) nor worship him in any other way than he has commanded in his word. (b) 

 (a) Deut.4:15 Take ye therefore good heed unto yourselves; for ye saw no manner of similitude on the day that the LORD spake unto you in Horeb out of the midst of the fire: Deut.4:16 Lest ye corrupt yourselves, and make you a graven image, the similitude of any figure, the likeness of male or female, Deut.4:17 The likeness of any beast that is on the earth, the likeness of any winged fowl that flieth in the air, Deut.4:18 The likeness of any thing that creepeth on the ground, the likeness of any fish that is in the waters beneath the earth: Deut.4:19 And lest thou lift up thine eyes unto heaven, and when thou seest the sun, and the moon, and the stars, even all the host of heaven, shouldest be driven to worship them, and serve them, which the LORD thy God hath divided unto all nations under the whole heaven. Isa.40:18 To whom then will ye liken God? or what likeness will ye compare unto him? Isa.40:19 The workman melteth a graven image, and the goldsmith spreadeth it over with gold, and casteth silver chains. Isa.40:20 He that is so impoverished that he hath no oblation chooseth a tree that will not rot; he seeketh unto him a cunning workman to prepare a graven image, that shall not be moved. Isa.40:21 Have ye not known? have ye not heard? hath it not been told you from the beginning? have ye not understood from the foundations of the earth? Isa.40:22 It is he that sitteth upon the circle of the earth, and the inhabitants thereof are as grasshoppers; that stretcheth out the heavens as a curtain, and spreadeth them out as a tent to dwell in: Isa.40:23 That bringeth the princes to nothing; he maketh the judges of the earth as vanity. Isa.40:24 Yea, they shall not be planted; yea, they shall not be sown: yea, their stock shall not take root in the earth: and he shall also blow upon them, and they shall wither, and the whirlwind shall take them away as stubble. Isa.40:25 To whom then will ye liken me, or shall I be equal? saith the Holy One. Rom.1:23 And changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things. Rom.1:24 Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonour their own bodies between themselves: Acts 17:29 Forasmuch then as we are the offspring of God, we ought not to think that the Godhead is like unto gold, or silver, or stone, graven by art and man's device. 

(b) 1 Sam.15:23 For rebellion is as the sin of witchcraft, and stubbornness is as iniquity and idolatry. Because thou hast rejected the word of the LORD, he hath also rejected thee from being king. Deut.12:30 Take heed to thyself that thou be not snared by following them, after that they be destroyed from before thee; and that thou enquire not after their gods, saying, How did these nations serve their gods? even so will I do likewise. Deut.12:31 Thou shalt not do so unto the LORD thy God: for every abomination to the LORD, which he hateth, have they done unto their gods; for even their sons and their daughters they have burnt in the fire to their gods. Deut.12:32 What thing soever I command you, observe to do it: thou shalt not add thereto, nor diminish from it. Matt.15:9 But in vain they do worship me, teaching for doctrines the commandments of men. 

 Q. 97. Are images then not at all to be made? 

A. God neither can, nor may be represented by any means: (a) but as to creatures; though they may be represented, yet God forbids to make, or have any resemblance of them, either in order to worship them or to serve God by them. (b) 

 (a) Isa.40:25 To whom then will ye liken me, or shall I be equal? saith the Holy One. 

(b) Exod.23:24 Thou shalt not bow down to their gods, nor serve them, nor do after their works: but thou shalt utterly overthrow them, and quite break down their images. Exod.23:25 And ye shall serve the LORD your God, and he shall bless thy bread, and thy water; and I will take sickness away from the midst of thee. Exod.34:13 But ye shall destroy their altars, break their images, and cut down their groves: Exod.34:14 For thou shalt worship no other god: for the LORD, whose name is Jealous, is a jealous God: Exod.34:17 Thou shalt make thee no molten gods. Num.33:52 Then ye shall drive out all the inhabitants of the land from before you, and destroy all their pictures, and destroy all their molten images, and quite pluck down all their high places: Deut.7:5 But thus shall ye deal with them; ye shall destroy their altars, and break down their images, and cut down their groves, and burn their graven images with fire. Deut.12:3 And ye shall overthrow their altars, and break their pillars, and burn their groves with fire; and ye shall hew down the graven images of their gods, and destroy the names of them out of that place. Deut.16:21 Thou shalt not plant thee a grove of any trees near unto the altar of the LORD thy God, which thou shalt make thee. 2 Kin.18:3 And he did that which was right in the sight of the LORD, according to all that David his father did. 2 Kin.18:4 He removed the high places, and brake the images, and cut down the groves, and brake in pieces the brasen serpent that Moses had made: for unto those days the children of Israel did burn incense to it: and he called it Nehushtan. 

 Q. 98. But may not images be tolerated in the churches, as books to the laity? 

A. No: for we must not pretend to be wiser than God, who will have his people taught, not by dumb images, (a) but by the lively preaching of his word. (b) 

 (a) Jer.10:8 But they are altogether brutish and foolish: the stock is a doctrine of vanities. Hab.2:18 What profiteth the graven image that the maker thereof hath graven it; the molten image, and a teacher of lies, that the maker of his work trusteth therein, to make dumb idols? Hab.2:19 Woe unto him that saith to the wood, Awake; to the dumb stone, Arise, it shall teach! Behold, it is laid over with gold and silver, and there is no breath at all in the midst of it. 

(b) Rom.10:14 How then shall they call on him in whom they have not believed? and how shall they believe in him of whom they have not heard? and how shall they hear without a preacher? Rom.10:15 And how shall they preach, except they be sent? as it is written, How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things! Rom.10:17 So then faith cometh by hearing, and hearing by the word of God. 2 Pet.1:19 We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts: 2 Tim.3:16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: 2 Tim.3:17 That the man of God may be perfect, throughly furnished unto all good works.

Source: http://www.ccel.org/creeds/heidelberg-cat-ext.txt