'Full grown' in the Bible

and this is smaller than all other seeds, but when it is full grown, it is larger than the garden plants and becomes a tree, so that the birds of the air come and nest in its branches.”

We speak wisdom, however, among them that are fullgrown: yet a wisdom not of this world, nor of the rulers of this world, who are coming to nought:

until we all arrive at the unity of the faith and of the knowledge of the Son of God, at the full-grown man, at the measure of the stature of the fulness of the Christ;

All of us who are mature [pursuing spiritual perfection] should have this attitude. And if in any respect you have a different attitude, that too God will make clear to you.

We proclaim Him, warning and instructing everyone in all wisdom [that is, with comprehensive insight into the word and purposes of God], so that we may present every person complete in Christ [mature, fully trained, and perfect in Him—the Anointed].

but solid food belongs to full-grown men, who, on account of habit, have their senses exercised for distinguishing both good and evil.

Then the lust, when it hath conceived, beareth sin: and the sin, when it is fullgrown, bringeth forth death.

There is no fear in love [dread does not exist]. But perfect (complete, full-grown) love drives out fear, because fear involves [the expectation of divine] punishment, so the one who is afraid [of God’s judgment] is not perfected in love [has not grown into a sufficient understanding of God’s love].