Paul is not jesus. And he was not speaking in parables.
It was not the will of Paul as if it was a private interpretation coming from the mind of men .All scripture is God breathed.
Knowing this first, that no prophecy of the scripture is of any private interpretation.For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost. 2Pe 1:20
Without parables, the poetic language of God, as His personal signature, Christ spoke not. They hide spiritual truth from one while revealing it to the elect. Keep the proper hermeneutics in mind when looking at a parable.
2Corinthians 4:18 While we look not at the things which are seen, but at the things which are not seen: for the things which are seen are temporal; but the things which are not seen are eternal.
We can see that in the parable below. (remember the kingdom of God is not of this world ) if it was we could walk by sight .
By faith ( Christ's working in him)
Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son, Of whom it was said, That in Isaac shall thy seed be called: Accounting that God was able to raise him up, even from the dead; from whence also he received him in a figure. (parable) Heb 11:19
Strongs lexicon( Greek) 3850 parabole {par-ab-ol-ay'}
from 3846; TDNT - 5:744,773; n f
AV -
parable 46,
figure 2,
comparison 1,
proverb 1; 50
1) a placing of one thing by the side of another, juxtaposition, as of ships in battle 2) metaph. 2a) a comparing, comparison of one thing with another, likeness, similitude 2b) an example by which a doctrine or precept is illustrated 2c) a narrative, fictitious but agreeable to the laws and usages of human life, by which either the duties of men or the things of God, particularly the nature and history of God's kingdom are figuratively portrayed 2d) a parable: an earthly story with a heavenly meaning 3) a pithy and instructive saying, involving some likeness or comparison and having preceptive or admonitory force 3a) an aphorism, a maxim 4) a proverb 5) an act by which one exposes himself or his possessions to danger, a venture, a risk
All of the proverbs are parables in the same way.
Pro 1:1 The proverbs of Solomon the son of David, king of Israel;
Strongs lexicon(hebrew) ... 04912 mashal {maw-shawl'}
apparently from 04910 in some original sense of superiority in mental action; TWOT - 1258a; n m
AV -
proverb 19,
parable 18,
byword 1, like 1; 39
1) proverb, parable 1a) proverb, proverbial saying, aphorism 1b) byword 1c) similitude, parable 1d) poem 1e) sentences of ethical wisdom, ethical maxims