Number 66 is a multiple of 6 which makes it about things about a greater intensity of sin. To demonstrate this, I've included below a selection of the 66th verse of some books of the Bible. I've not included every 66th verse as some are examples more difficult to discern. Nonetheless, these list of 66th book-verses provides compelling evidence for the symbolism of God's number 66.
Gen 3:10 And he said, I heard thy voice in the garden, and I was afraid, because I was naked; and I hid myself.
Judg 3:7 And the children of Israel did evil in the sight of the LORD, and forgat the LORD their God, and served Baalim and the groves.
Mic 5:12 And I will cut off witchcrafts out of thine hand; and thou shalt have no more soothsayers:
Zech 5:8 And he said, This is wickedness. And he cast it into the midst of the ephah; and he cast the weight of lead upon the mouth thereof.
Matt 4:1 Then was Jesus led up of the spirit into the wilderness to be tempted of the devil.
John 2:15 And when he had made a scourge of small cords, he drove them all out of the temple, and the sheep, and the oxen; and poured out the changers' money, and overthrew the tables;
1Cor 3:19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
1Joh 4:3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
Exo 3:19 And I am sure that the king of Egypt will not let you go, no, not by a mighty hand.
Prov 3:11 My son, despise not the chastening of the LORD; neither be weary of his correction:
Jer 3:10 And yet for all this her treacherous sister Judah hath not turned unto me with her whole heart, but feignedly, saith the LORD.
Joel 3:14 Multitudes, multitudes in the valley of decision: for the day of the LORD is near in the valley of decision.
Act 2:40 And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation.
Rom 3:5 But if our unrighteousness commend the righteousness of God, what shall we say? Is God unrighteous who taketh vengeance? (I speak as a man)
Gal 3:21 Is the law then against the promises of God? God forbid: for if there had been a law given which could have given life, verily righteousness should have been by the law.
1The 5:5 Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness.
Heb 4:15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.
1Pet 3:16 Having a good conscience; that, whereas they speak evil of you, as of evildoers, they may be ashamed that falsely accuse your good conversation in Christ.
Rev 3:17 Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:
Josh 4:7 Then ye shall answer them, That the waters of Jordan were cut off before the ark of the covenant of the LORD; when it passed over Jordan, the waters of Jordan were cut off: and these stones shall be for a memorial unto the children of Israel for ever.
2Sam 3:7 And Saul had a concubine, whose name was Rizpah, the daughter of Aiah: and Ishbosheth said to Abner, Wherefore hast thou gone in unto my father's concubine?
Psa 7:10 My defence is of God, which saveth the upright in heart.
Isa 3:13 The LORD standeth up to plead, and standeth to judge the people.
Amo 5:7 Ye who turn judgment to wormwood, and leave off righteousness in the earth,
Mrk 2:21 No man also seweth a piece of new cloth on an old garment: else the new piece that filled it up taketh away from the old, and the rent is made worse.
Philp 3:6 Concerning zeal, persecuting the church; touching the righteousness which is in the law, blameless.
2Tim 4:5 But watch thou in all things, endure afflictions, do the work of an evangelist, make full proof of thy ministry.
Deu 2:20 (That also was accounted a land of giants: giants dwelt therein in old time; and the Ammonites call them Zamzummims;
Job 4:5 But now it is come upon thee, and thou faintest; it toucheth thee, and thou art troubled.
1Sam 3:2 And it came to pass at that time, when Eli was laid down in his place, and his eyes began to wax dim, that he could not see;
2Kin 3:23 And they said, This is blood: the kings are surely slain, and they have smitten one another: now therefore, Moab, to the spoil.
Neh 4:3 Now Tobiah the Ammonite was by him, and he said, Even that which they build, if a fox go up, he shall even break down their stone wall.