Allow perseverance to finish its work, so that you may be mature and complete, not lacking anything.
But let patience have her perfect work,.... Or effect; or be brought unto perfection; which may denote both the sincerity and continuance of it unto the end, with constancy: patience may be said to be perfect, when it appears to be real and sincere, and not dissembled; for as there may be a feigned faith, a dissembled love, and an hypocritical hope, so likewise a...
Verse 4. But let patience have her perfect work. Let it be fairly developed. Let it produce its appropriate effects without being hindered. Let it not be obstructed in its fair influence on the soul, by murmurings, complaining, or rebellion.
That is, "Let your patience and perseverance under sufferings resolutely continue and hold out to the end;" this the apostle urges, because some persons bore out the first brunt and onset of persecution, but being exercised with diversity and length of trials, they fainted.