... then he says, “Here I am: I have come to do your will.” He does away with the first to establish the second. By his will we have been made holy through the offering of the body of Jesus Christ once for all. Hebrews 10:9-10 NET

Therefore he is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, since a death has occurred that redeems them from the transgressions committed under the first covenant. Hebrews 9:15 ESV

... but he holds his priesthood permanently since he lives forever. 

So he is able to save completely those who come to God through him, 

because he always lives to intercede for them. Hebrews 7:24-25 NET

The LORD has taken an oath and will not break his vow: "You are a priest forever." Because of this oath, Jesus is the one who guarantees this better covenant with God. Hebrews 7:21b-22 NLT-SE

God's truth has never been popular. Whenever Christianity becomes popular, it is not on its way to die, it is has already died. - A. W. Tozer, Culture: Living as Citizens of Heaven in Earth - Collected Insights from A. W. Tozer

But we don’t need to write to you about the importance of loving each other, for God himself has taught you to love one another. Indeed, you already show your love for all the believers throughout Macedonia. Even so, dear brothers and sisters, we urge you to love them even more. Make it your goal to live a quiet life, minding your own business and working with your hands, just as we instructed you before. Then people who are not believers will respect the way you live, and you will not need to depend on others. 1 Thessalonians 4:9-12 NLT-SE

For they themselves report concerning us the kind of reception we had among you, and how you turned to God from idols to serve the living and true God, and to wait for his Son from heaven, whom he raised from the dead, Jesus who delivers us from the wrath to come. 1 Thessalonians 1:9-10 ESV