Richard, what do you make of this : if we abide in Him we do not sin.
We abide in Him by faith in Him. Meaning faith, belief, trust, and confidence in His work on the cross where He paid for our sins of the flesh.
A child of God has been spiritually placed in Christ by the Holy Spirit. It is our spirit that is placed in Christ and since He is sinless so are our spirits.
But our sinful flesh is still sinful. This is the weakness of the law. The law does not save, it condemns. But God has made a plan of salvation called grace that saves sinners (the ungodly). It doesn't make the flesh sinless and it will die but the spirit will live forever with Jesus.
OUR ARK: (the “in Christ” doctrine)
2 Cor 1:19-22
19 For the Son of God, Jesus Christ, who was preached among you by us-- by me, Silvanus, and Timothy-- was not Yes and No, but in Him was Yes.
20 For all the promises of God in Him are Yes, and in Him Amen, to the glory of God through us.
21 Now He who establishes us with you ""in Christ"" and has anointed us is God,
22 who also has sealed us and given us the Spirit in our hearts as a guarantee.
(NKJ)
I look at the words ""in Christ"" and think of them in reference to Noah and the flood.
Noah was told by God to build an Ark. It was built by human hands (Noah’s hands). The waters of God‘s wrath in the flood did not touch Noah and those with him. Noah, by his choice, obeyed God and went into the Ark he had built. --- The waters of the flood were the judgment of God on a sinful world full of sinful people. That does not mean that Noah was sinless. It means Noah believed what God told him.
Today there is another Ark. It is “”NOT”” built by human hands. It is built by the hands (will) of God. - Man can not go into the Ark that God has built by his own efforts (will). He must be placed in God’s Ark (Jesus) by God (the Holy Spirit). God places a person in the Ark (Jesus) He built when that person places their faith, trust and confidence in Jesus’ work on the cross to save him/her. -- This Ark that God has built carries those in it safely over the sins “THEY” commit in their flesh. Their sins can not touch them since they have been atoned (paid) for by the blood of Jesus on the cross.
Jesus Christ is OUR ARK, and just as those in Noah's Ark were kept from the waters of the flood, we who are placed ""in Christ,"" by God, and are kept from the judgment of the law. If we are not ""in Christ"" the law condemns us.
I believe what Paul said when he penned the words ""in Christ."" I also believe that we are placed ""in Christ"" by God. It is an operation of the Holy Spirit (God).