God will always accept our return to Him.
It was aimed at those practicing Judaism.
They came from a strong system of belief.
If they went BACK to it, indeed it would be difficult for them to leave it a second time.
Yeah, there I disagree with regard to the practice of Judaism and going back to that.
If I may use you as an example: You believe that we are to uphold the commands / commandments, inclusive of the 10, and others that you see as Jesus having stated as "commands".
There are those I am sure they have accused you of having returned to the "law" due to your beliefs.
If you occasionally stumble and break one, there is forgiveness. However, if you were to intentionally turn away from upholding them, would that not be "willful sin"?
Num 15:30 But the soul that doeth aught with a high hand, whether he be home-born or a sojourner, the same blasphemeth YHVH; and that soul shall be cut off from among his people.
31 Because he hath despised the word of YHVH, and hath broken his commandment, that soul shall utterly be cut off; his iniquity shall be upon him.
Heb 10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more a sacrifice for sins, 27 but a certain fearful expectation of judgment, and a fierceness of fire which shall devour the adversaries. 28 A man that hath set at nought Moses law dieth without compassion on the word of two or three witnesses: 29 of how much sorer punishment, think ye, shall he be judged worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant wherewith he was sanctified an unholy thing, and hath done despite unto the Spirit of grace?
Heb 6:4 For as touching those who were once enlightened and tasted of the heavenly gift, and were made
partakers of the Holy Spirit, 5 and tasted the good word of God, and the powers of the age to come, 6 and then fell away, it is impossible to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
Being partakers in the Holy Spirit, is where it becomes more grievous from my perspective. Just as the comparison with regard to Moses and the Blood of the covenant in Hebrews 10 which I quoted above.
I do not doubt that certain people can return and be accepted. However, neither shall they attain to fullness of what might of been from my perspective. However, neither am I convinced that such is the case for "everyone".
We can certainly grieve the Holy Spirit, we can certainly quench the Holy Spirit. If we intentionally choose to do so in a consistent, habitual and willful manner ...
For being partakers in the Holy Spirit, could loosely be likened to those who also witnessed and heard the voice of "God", yet turned away ... And for them, they did not receive the "promise".