'Perfection' in the Bible

Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,

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?

because God had us in mind and had something better for us, so that they [these men and women of authentic faith] would not be made perfect [that is, completed in Him] apart from us.

[looking away from all that will distract us and] focusing our eyes on Jesus, who is the Author and Perfecter of faith [the first incentive for our belief and the One who brings our faith to maturity], who for the joy [of accomplishing the goal] set before Him endured the cross, disregarding the shame, and sat down at the right hand of the throne of God [revealing His deity, His authority, and the completion of His work].