Jesus the High Priest

In preparing on preaching about Jesus being our high priest I was reading in Hebrews 8:10 tonight and God simply but directly states, "For this is the covenant I will make..." In doing this He is contrasting the faults of the Old (For if that first covenant had been faultless, there would have been no occasion to look for a second. - Hebrews 8:7) with the better promises of the New. The Old Covenant was broken by their disobedience but one of the promises of the New is that God has secured our obedience forever because provision is made in the covenant itself against any such event; negatively, because Christ has atoned for our sins and positively, because he has earned and imputed to us His righteousness. We have a high priest that has bought us but also keeps us until eternity! And what a blessing that God Himself would covenant with us, not by our merits, but by His grace and mercy in Christ. Our conscious' should be at rest because of this, resting in our true Sabbath Jesus and His finished work on the cross.