For the law appoints as high priests men in all their weakness; but the oath, which came after the law, appointed the Son, who has been made perfect forever.
NIV
For the Law sets up men in their weakness [frail, sinful, dying human beings] as high priests, but the word of [God's] oath, which [was spoken later] after the institution of the Law, [chooses and appoints as priest One Whose appointment is complete and permanent], a Son Who has been made perfect forever. [Ps. 110:4.]AMP
For the law maketh men high priests which have infirmity; but the word of the oath, which was since the law, maketh the Son, who is consecrated for evermore.
KJV
Without father or mother, without genealogy, without beginning of days or end of life, resembling the Son of God, he remains a priest forever.
NIV
Without [record of] father or mother or ancestral line, neither with beginning of days nor ending of life, but, resembling the Son of God, he continues to be a priest without interruption and without successor.
AMP
Without father, without mother, without descent, having neither beginning of days, nor end of life; but made like unto the Son of God; abideth a priest continually.
KJV
Unlike the other high priests, he does not need to offer sacrifices day after day, first for his own sins, and then for the sins of the people. He sacrificed for their sins once for all when he offered himself.
NIV
He has no day by day necessity, as [do each of these other] high priests, to offer sacrifice first of all for his own [personal] sins and then for those of the people, because He [met all the requirements] once for all when He brought Himself [as a sacrifice] which He offered up.
AMP
Who needeth not daily, as those high priests, to offer up sacrifice, first for his own sins, and then for the people's: for this he did once, when he offered up himself.
KJV
If perfection could have been attained through the Levitical priesthood – and indeed the law given to the people established that priesthood – why was there still need for another priest to come, one in the order of Melchizedek, not in the order of Aaron?
NIV
Now if perfection (a perfect fellowship between God and the worshiper) had been attainable by the Levitical priesthood--for under it the people were given the Law--why was it further necessary that there should arise another and different kind of Priest, one after the order of Melchizedek, rather than one appointed after the order and rank of Aaron?
AMP
If therefore perfection were by the Levitical priesthood, (for under it the people received the law,) what further need was there that another priest should rise after the order of Melchisedec, and not be called after the order of Aaron?
KJV
Now there have been many of those priests, since death prevented them from continuing in office
NIV
[Again, the former successive line of priests] was made up of many, because they were each prevented by death from continuing [perpetually in office]AMP
And they truly were many priests, because they were not suffered to continue by reason of death:
KJV