Hebrews 2:3

I mean the fleshly and by "air' the spiritual. For if the mind is set free of evil thoughts and passions and through it we gaze upon the freedom which Christ and God gave to us, then we will no longer be bound by and brought down by our former slavery to sin and a fleshly mind. Instead, heeding the voice of the Lord we will watch and pray without ceasing, and we will go from that place and arrive at bliss and the promised good things, by the grace and kindness of our Lord Jesus Christ, to whom belongs all glory for ever. Amen

And then, demonstrating by plain consequence that as at that time the word was spoken by the angels, so now by the Son; "Therefore," he says, "we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip. For if the word spoken by angels was steadfast, and every transgression and disobedience received a just recompense of reward; how shall we escape, if we neglect so great salvation?" And then, as though you asked, What salvation?—in order to show that he is now speaking of the New Testament, that is, of the word which was spoken not by angels, but by the Lord, he says, "Which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard Him; God also bearing them witness, both with signs and wonders, and with divers miracles, and gifts of the Holy Ghost, according to His own will."

Again he associated a comparison with the exhortation, showing the extent to which the gospel teaching surpasses the provisions of the law. The ministry of angels was involved in the giving of the law, whereas in this case the Lord in person was the first to propose the saving teaching, and those who were in receipt of the apostolic grace welcomed it. While the law gives us a glimpse of what has to be done, the Lord's teaching is the source of eternal salvation.… He also showed the new covenant to be resplendent with spiritual gifts: of old the inspired authors alone shared in the spiritual bounty, whereas now all the believers enjoy this grace.… While he said this to encourage them to give heed to the divine teaching more zealously, he brought out the difference between the former and the latter under the guise of exhortation. It was very wise of him to say God witnesses to the message through miracles: the demonstration is beyond question, and the reliability of the witness indisputable.