It is a fearful thing to enter the presence of Yahweh God. No one is good enough, and no one has that right. If even an animal sets foot on that mountain when Yahweh is there, run it through with a spear—it has no right to be so close. When the Ark of the Covenant was returned to Israel, some of the men of Beth Shemesh just had to look inside, so Yahweh killed them and struck the people with a plague. The lesson was clear: "Who can stand in the presence of Yahweh, this holy God?" (1 Sam. 6:20). No man has that right. Uzzah failed to learn from history and put out his hand to steady the ark as it was being transported to Jerusalem. When he touched it, he died. He had no right to come so close. Even Levite priests had no right—they too must stay back. Of that priestly clan, only those of the family of Aaron could go beyond the curtain, only the high priest. But even he could dare approach only once a year, and that only after careful preparations were made and prescriptions followed. If he violated those prescriptions he would be struck dead. No man has the right to enter beyond the veil into the presence of Yahweh.
Now do we understand exactly what it was that Jesus accomplished for us? Jesus accomplished everything so that we can come into the presence of Yahweh God.
"Therefore, brothers, since we have confidence to enter the Most Holy Place by the blood of Jesus, by the new and living way that he opened for us through the curtain, that is, through his flesh, and since we have a great High Priest over the house of God, let us draw near with a true heart in full assurance of faith, with our hearts sprinkled clean from an evil conscience and our bodies washed with pure water." Hebrews 10:19-22
Under the Old Covenant, your conscience was never free of your sin. Because you had to offer sacrifices for your sins every year, you were always reminded of them. They were never forgiven, only covered, like putting a bandaid on. Your sin always loomed over your head. When God talked about the New Covenant (Jer. 31:31-34; Heb. 8:8-12), He said that it would be "not like the covenant which I made with their fathers," which is the Old Covenant, the Mosaic Covenant. The New Covenant is radically new. He said "I will be merciful to their iniquities, and I will remember their sins no more." Where was your sin dealt with? At the cross. When Jesus was crucified, all your sins were future. The idea that you could have future sins that have not been forgiven is nonsensical. When you come to Christ Jesus in faith, all your sins are forgiven and forgotten. Forever! Because Jesus lives, His sacrifice is an eternal one and therefore your sins can be completely forgiven for all time.
Jesus was "born under the Law to redeem those under the Law" (Gal. 4:4-5). He lived under the Old Covenant. He had a two-fold ministry. First, much of what He said, His difficult teachings, was intended to increase the weight of the Law upon the people to demonstrate the impossibility of keeping it so that they would become distressed and look for something better. Second, He was preparing the way for grace. Under the New Covenant, God, through Jesus, accomplishes everything on our behalf and in our place. This is why Jesus said, "It is finished!" He accomplished everything. There is nothing left for us to do except to say, "Thank you!"
Now do we understand the difference between the Old Covenant and the New Covenant? Now do we understand the biblical Gospel? Now do we understand grace? More grace will not lead to more sinning. In fact, it leads to the opposite in those who have been truly touched by the grace of God and who correctly understand it.