A few random thoughts.
The inspired text used archaic words that needed to be explained.
1 Samuel 9:9 (Beforetime in Israel, when a man went to enquire of God, thus he spake, Come, and let us go to the seer: for he that is now called a Prophet was beforetime called a Seer.) Ra’ah is translated seer 12 times; Nabiy’, prophet 312 times.
See also 1 Chronicles 29:29; 2 Chronicles 16:7, 10.
The inspired text used words or thoughts whose meaning had to be interpreted.
Mark 7:2 And when they saw some of his disciples eat bread with defiled (koinos: common, unholy; Greek word used 12 times total), that is to say, with unwashen (aniptos, used 3 times), hands, they found fault.
See also Hebrews 9:11; Hebrews 10:20.
The inspired text used foreign words that had to be translated into the reader’s language.
Matthew 27:33 And when they were come unto a place called Golgotha, that is to say, a place of a skull,
Matthew 27:46 And about the ninth hour Jesus cried with a loud voice, saying, Eli, Eli, lama sabachthani? that is to say, My God, my God, why hast thou forsaken me?
Mark 7:11 But ye say, If a man shall say to his father or mother, It is Corban, that is to say, a gift, by whatsoever thou mightest be profited by me; he shall be free.
Acts 1:19 And it was known unto all the dwellers at Jerusalem; insomuch as that field is called in their proper tongue, Aceldama, that is to say, The field of blood.
Mark 5:41 And he took the damsel by the hand, and said unto her, Talitha cumi; which is, being interpreted, Damsel, I say unto thee, arise.
Jesus taught in cryptic stories that needed explaining.
Mark 4:34 But without a parable spake he not unto them: and when they were alone, he expounded all things to his disciples.
See also Matthew 15:15; Luke 24:27; Acts 8:31.
Jesus spoke and the Spirit inspired words, thoughts, and principles that were hard to understand.
John 3:12 If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you of heavenly things?
2 Peter 3:16 as also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.
Paul gave a grammatical explanation of a word.
Galatians 3:16 Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ.
Words to be studied, considered, meditated upon
Matthew 9:13 But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.
Some things are passed down, and should be explained by the elders.
Deuteronomy 32:7 Remember the days of old, consider the years of many generations: ask thy father, and he will shew thee; thy elders, and they will tell thee.
Natural man does not receive the things of God.
1 Corinthians 2:14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
2 Peter 2:12 But these, as natural brute beasts, made to be taken and destroyed, speak evil of the things that they understand not; and shall utterly perish in their own corruption;
Some things are, ultimately, understood or received by faith.
Hebrews 11:3 Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.