Matthew 26:41 English Standard Version (ESV) Watch and pray that you may not enter into temptation. The spirit indeed is willing, but the flesh is weak.”

Mark 14:38 English Standard Version (ESV) Watch and pray that you may not enter into temptation. The spirit indeed is willing, but the flesh is weak.”

Romans 8:3 English Standard Version (ESV) For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh,

I appreciate that Matthew and Mark quoted the exact same words. It is confirming a truth which we can all identify with. Paul explains for us in Romans 8:3 what the effect weak flesh has in connection with keeping the law. Weak flesh keeps the law from performing the function of being righteous. If we do right we are right.

Knowing we are weak God sent His Son Jesus Christ to do for us what we could not do for ourselves, to condemn sin itself. The first verse in Romans 8 puts condemnation to task and is the subject of the first portions of Romans 8.

Romans 8:1 English Standard Version (ESV) There is therefore now no condemnation for those who are in Christ Jesus.

Some manuscripts add who walk not according to the flesh (but according to the Spirit). Those words added to the ESV translation are a reminder that if we are in Christ, this is how we should walk with Christ. It seems we need to be constantly reminded of how to walk. Perhaps that is because we still have to deal with our weak flesh.

Before we go too far afield allow me to draw us back to the no condemnation issue. Romans 8:3 point out that sin has been condemned. It lives under a death sentence. That is what condemned means. We who are in Christ no longer live under a sentence of death.

We have already been executed. Jeopardy is applied. We cannot be crucified afresh.