Spiritual Israel doesn't mean invisible ethereal Israel, but Israel that is ruled by the spirit, ie those who walk according to the spirit rather than the flesh.
“
It is the spirit that quickeneth; the flesh profiteth nothing:
the words that I speak unto you, they are spirit, and they are life.”
John 6:63 KJV
“Thou shalt not commit adultery.”
Exodus 20:14 KJV
Flesh command v
spiritual command
And so Jesus begins to speak to the people
“
Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
but I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.”
Matthew 5:27-28 KJV
If walk according to the spiritual command of Christ Jesus , there’s never going to be the motivation to commit adultery with our flesh which is a carnal action commited by the person with thier flesh , thier body but the way to obey God is to walk after and heed the words Christ is teaching us . That way we’ll never want to commit adultery because we are repentant of the lust in the first place . We can’t sit around watching pornography or lusting after a woman at work imagining how attractive she is to us imagining what it would be like ect
“Jesus nips it in the bud “ he’s teaching us how to operate within our body , but according to his spirit that is with us as we hear and believe the gospel and begin to follow after Jesus and his ways that are so much better than telling people “ don’t commit the adultery that’s burning constantly in your heart just resist and don’t do it or else “
That cannot ever help or change us within. It Jesus doctrine is about fixing this part
“For
from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, thefts, covetousness,
wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness: all
these evil things come from within, and defile the man.”
Mark 7:21-23 KJV
Jesus words are targeting the issues of corruption within us if we begin to think of Gods word telling us “ if you look at another person with lust and wrong intentions in your heart , you need to repent because you’ve sinned in your heart . “ like Jesus taught rather than teaching sinners who are corrupt “not to sin “ or else “
jesus doctrine is the solution to the problems the law exposed in mankinds weak and pitiful fallen nature wheras we fall captive and are dominated by sin on our own it just becomes part of life normal . But it still leads mankind to death and Jesus came to change how we understand and view God the “ spirit of our mind “ how we understand him and his Will and how to overcome and eliminate so many pitfalls within us
if we follow after Christ and his words and ways we learn as we abide more and more there’s eternal life at the end of the path and a promise from our creator and savior that he will see us through if we just hold on and follow after what he’s teaching us he’s able to change so much we cannot because our minds are corrupt from the world
“And be not conformed to this world: but
be ye transformed by the renewing of your mind, ( hearing and believing the gospel does this
)that ye may prove what is that good, and acceptable, and perfect, will of God.”
Romans 12:2
“
if so be that ye have heard him, and have been taught by him, as the truth is in Jesus: that ye put off concerning the former conversation
the old man, which is corrupt according to the deceitful lusts; and
be renewed in the spirit of your mind; ( the gospel teaches us the right way to understand God and ourselves ) and
that ye put on the new man, which after God is created in righteousness and true holiness.”
Ephesians 4:21-24 KJV
“Then said Jesus to those Jews which
believed on him,
If ye continue in my word, then are ye my disciples indeed; and
ye shall know the truth, and the truth shall make you free.”
John 8:31-32 KJV
The spiritual doctrine is the New Testament the carnal commandments are the old before the spirit of Christ Jesus the son , was given to mankind through the gospel