-A8
And we know that God causes all things to work together for good to those who love God, to those who are called according to His purpose.
29 For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren;
30 and these whom He predestined, He also called; and these whom He called, He also justified; and these whom He justified, He also glorified.
We go to Heaven when we are glorified, but here on earth, because of Jesus (Hebrews 4:14)
Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.
4:15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted ( like as we are, yet without sin.
4:16 Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.
"So, we can enter heaven, into the throne room of God, without sanctification?"
No, and we can't enter it based on our "good works". You enter the throne room based on what Jesus accomplished and His worthiness is our entre. Our sanctification is accomplished at our glorification. It has nothing to do with our worthiness to enter just as the high priest who entered the Holy of Holies had nothing in himmself that allowed him to enter into the Presence without the blood of the sacrifice. It was the blood that covered, not the holiness of the high priest.