"For you created my inmost being. You knit me together in my mother's womb. I praise you because I am fearfully and wonderfully made. Your works are wonderful, I know this full well." -Psalm 139:13-14

"But in fact, God has arranged the parts of the body, every one of them, just as he wants them to be." -1 Cor 12:18

"Behold, I, Paul, tell you that if you be circumcised, Christ will be of no advantage to you." -Gal 5:2  

"And I testify again to every male who receives circumcision, that he is in debt to keep the whole Law. You who do so have been severed from Christ...you have fallen from grace." -Gal 5:3

"For when we place our faith in Christ Jesus, it makes no difference to God whether we are circumcised or not circumcised. What is important is faith expressing itself in love." -Gal 5:6

"But if I still proclaim circumcision...then the stumbling block of the cross has been abolished." -Gal 5:11

"I wish that those who are pushing you to do so would mutilate themselves!" -Gal 5:12

"And even those who advocate circumcision don’t really keep the whole law. They only want you to be circumcised so they can brag about it and claim you as their disciples." -Gal 6:13

"For neither circumcision nor uncircumcision matters. Rather, what matters is being a new creation." -Gal 6:15

"For there are many who rebel against right teaching; they engage in useless talk and deceive people. This is especially true of those who insist on circumcision for salvation. They must be silenced. By their wrong teaching, they have already turned whole families away from the truth. Such teachers only want your money" -Titus 1:10-11

"Watch out for those wicked men – dangerous dogs, I call them – who say you must be circumcised. Beware of the evil doers. Beware of the mutilation. For it isn’t the cutting of our bodies that makes us children of God; it is worshiping him with our spirits." -Phil 3:2-3

"But each of you should remain in the place in life that the Lord has given you. Stay as you were when God chose you. Was a man already circumcised [Old Covenant] when God chose him? Then he should not become uncircumcised. Was he uncircumcised [New Covenant] when God chose him? Then he should not be circumcised. Being circumcised means nothing. Being uncircumcised means nothing. Doing what God commands is what counts." -1 Cor. 7:17-19

"Certain people came down from Judea to Antioch and were teaching, saying, 'Moses commanded you to be circumcised. If you aren't, you can't be saved.' But Paul and Barnabas didn't agree with this, argued strongly with them, and were appointed to go up to Jerusalem with other believers chosen to go with them. The apostles and elders met together to consider this question. [...] Peter got up and spoke to them, 'Brothers, you know that some time ago God chose me to take the good news to unbelievers. He wanted them to hear the good news and believe. God knows the human heart. [...] Now then, why are you trying to test God? You test him when you put a heavy load on the believers' shoulders [regarding circumcision]. Our people of long ago couldn't carry that load. We can't either." -Acts 15:1-2, 6-10

"Have nothing to do with godless myths and old wives’ tales; rather, train yourself to be godly." -1 Tim 4:7