Yes it is. Paul tells us so.
“It was for freedom that Christ set us free; therefore keep standing firm and do not be subject again to a yoke of slavery. Behold I, Paul, say to you that if you receive circumcision, Christ will be of no benefit to you.
And I testify again to every man who receives circumcision, that he is under obligation to keep the whole Law. You have been severed from Christ, you who are seeking to be justified by law; you have fallen from grace. For we through the Spirit, by faith, are waiting for the hope of righteousness. For in Christ Jesus neither circumcision nor uncircumcision means anything, but faith working through love.”
Galatians 5:1-6 NASB1995
It was for freedom that Christ set us free; therefore keep standing firm and do not be subject again to a yoke of slavery. Behold I, Paul, say to you that if you receive circumcision, Christ will be o
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In context, Paul is correcting that the Jews were trying to force new Gentile converts to getting circumcised in order to hear the gospel Gal 2:3 and for salvation Acts 15:1 as they were teaching all they had to do is get circumcised in order to be saved apart from Christ.
We also need to understand the role of circumcision, it was never meant to save anyone, it was the OT sign of God separating His people from everyone else.
Only His people had the cure for sin.
Lev 4:1 Now the LORD spoke to Moses, saying,
Lev 4:2 "Speak to the children of Israel, saying: 'If a person sins unintentionally against any of the commandments of the LORD in anything which ought not to be done, and does any of them,
Lev 4:3 if the anointed priest sins, bringing guilt on the people, then let him offer to the LORD for his sin which he has sinned a young bull without blemish as a sin offering.
So if a Gentile sinned, which they could do anywhere, the only way to get access to the OT cure of animal sacrifices in the temple was to be circumcised
Exo 12:43 And the LORD said to Moses and Aaron, "This is the ordinance of the Passover:
No foreigner shall eat it.
Exo 12:44 But every man's servant who is bought for money,
when you have circumcised him, then he may eat it.
Exo 12:48 And when a stranger dwells with you and wants to keep the Passover to the LORD,
let all his males be circumcised, and then let him come near and keep it; and he shall be as a native of the land. For no uncircumcised person shall eat it.
Jesus at the Cross took away this enmity for the OT cure for sin that the Jews were trying to say under-which doing without Christ would have to make animal sacrifices for sin, but that would make Christ's death in vain.
Col 2:11 In Him you were also circumcised with the circumcision made without hands, by putting off the body of the sins of the flesh, by the circumcision of Christ,
Col 2:12 buried with Him in baptism, in which you also were raised with Him through faith in the working of God, who raised Him from the dead.
Col 2:13 And you, being dead in your trespasses and the uncircumcision of your flesh, He has made alive together with Him, having forgiven you all trespasses,
Col 2:14 having wiped out the handwriting of requirements that was against us, which was contrary to us. And He has taken it out of the way, having nailed it to the cross.
The Ten Commandments is the description of sin 1 John 3:4 James 2:11 Rom 7:7
Why Paul contrasted circumcision with the commandments of God
1Co 7:19 Circumcision is nothing and uncircumcision is nothing,
but keeping the commandments of God is what matters.
The whole law Paul was referring to was back under the old law of sacrifice of animals for sins, when Jesus in the NT is our Passover Lamb. 1 Cor 5:7 and we can go to Him when we confess and repent which means being sorry and having a change of direction 1 John 1:9
Sin is the same as it was in the OT, transgressing God's laws 1 John 3:4 James 2:11 Rom 7:7 we have a much better cure in the NT, the blood of Jesus, but He never came to save us in our sins Heb 10:26-30- He came to save us from our sins Mat 1:21 we need a conversion.