'Fully' in the Bible

And let endurance have its perfect result and do a thorough work, so that you may be perfect and completely developed [in your faith], lacking in nothing.

Then when the illicit desire has conceived, it gives birth to sin; and when sin has run its course, it gives birth to death.

For we all stumble and sin in many ways. If anyone does not stumble in what he says [never saying the wrong thing], he is a perfect man [fully developed in character, without serious flaws], able to bridle his whole body and rein in his entire nature [taming his human faults and weaknesses].

But He gives us more and more grace [through the power of the Holy Spirit to defy sin and live an obedient life that reflects both our faith and our gratitude for our salvation]. Therefore, it says, “God is opposed to the proud and haughty, but [continually] gives [the gift of] grace to the humble [who turn away from self-righteousness].”