Everything necessary for our salvation has already been done by Jesus Christ on Calvary's cross. There is nothing you can do now except to receive what he has already accomplished. Believe on the Lord Jesus Christ and you shall be saved. I'd like to show you a very interesting word in the Bible, and we came across it earlier in our Scripture reading. It refers to some sort of water-proofing material.
Sin is atoned for by the blood of the lamb.
The basic idea is the same. When Noah and his family entered the ark, the rain beat against the sides of the craft. The water swirled around it. The waves and tides rose and fell, lashing the boat. But it was sealed with pitch, and waterproof.