'Perfect' in the Bible

being confident of this very thing, that he who began a good work in you will perfect it until the day of Jesus Christ:

Not that I have already obtained, or am already made perfect: but I press on, if so be that I may lay hold on that for which also I was laid hold on by Christ Jesus.

Let us therefore, as many as are perfect, be thus minded: and if in anything ye are otherwise minded, this also shall God reveal unto you: