The world in 3:16 is the world to come, not this current world. This world will be destroyed as the Bible informs per God's wrath - so how could GOD have "so loved" it? The only world that can exist eternally will be the world to come.
Had Christ's offering not been successful, then that new world would never be allowed by God to come into being, since it would then be under the law of sin and death - as this world currently is. But Christ was successful, so that new world will be created, having as its only law the law the spirit of life in Christ.
John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
John 3:17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
John 3:18 He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.
John 3:19 And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
John 3:20 For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved.
John 3:21 But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.
Putting these verses all together for the full context of what Jesus was saying here we see that the word "world" means whosoever of the people of the world that will believe in Christ and confess Him as their Lord and Savior will have eternal life with Him when He returns for His Bride.
Well, to "confess" is not just confessing verbally by the mouth, but for it to come from the heart first. For that to happen, God had to have first indwelt the person and changed the heart, which He does only to those who become born-again. As with most biblical statements of this type, the person in view had to first be saved by God, with any subsequent actions as an after affect, or of by-product of it.
Believing comes first after hearing the word of God preached to us as by faith we confess with our mouth as we believe from our heart that Jesus is our Lord and Savior. This all takes place at the time of our Spiritual rebirth from above as God changes our stone heart to a heart of love for Him and for others.
No one can repent of themselves that it is the work of the Holy Spirit.
We experience the word of God preached to us by hearing the word first like those on the day of Penetcost who had their hearts pricked by hearing the truth and asked Peter what they should do. Peter told them to repent and be baptized in the name of Jesus and then you will receive the gift of the Holy Spirit.
It's our obedience to the call of God through His word is what brings us to repentance as being part of the Spiritual rebirth and receiving the indwelling of the Holy Spirit. John 3:5-7; Luke 3:15-18; Romans 10:9, 10 Acts 2:37,38 all go hand in hand as we have four writers giving us all the same thing, but in various words that all come together as being God's salvation through Christ Jesus.
Wait -- did you quote verses that say we're saved by grace? And through faith -
the faith of Christ? That we are His workmanship, created in Jesus Christ?
Those verses don't leave any wiggle room for anything on our part, right?
Our only part is to first believe being the whosoever in John 3:16 as we can not work towards our salvation. Do you have to work for a free gift, no, it is given freely to all who will accept it.
If I understand you correctly, if we actually were to follow what you posted, then we would be trying to achieve the law through our works, and thus, we would be putting ourselves back under law which is what Christ came to remove
I'm only talking about the moral parts of the law that I mentioned in post #272 that we are to keep, not the parts that were written especially for Hebrews pertaining to the rituals of the Temple, sacrifices, festivals, Torah, Kohanim and Levites, the King and the Nazarite as Jesus has already fulfilled the Temple laws by His death and resurrection.