Let's look at two forms of division that deal with the outside and inside concept.
Reproduction is division. Cells split and stay bonded together in order for there to be growth or healing. A sperm and an egg meet and suddenly there is a flurry of division and very complex structures form as healthy individual cells that compose a individual life that has qualities of both the mother and the father.
"Since you have been born again, not of perishable seed but of imperishable, through the living and abiding word of God; for 'All flesh is like grass and all its glory like the flower of grass. The grass withers, and the flower falls, but the word of the Lord remains forever.' And this word is the good news that was preached to you." - 1 Peter 1:23-25 ESV
Grass grows and reproduces quickly but it is just grass making more grass that dies. When we believed there was a conception. Now the qualities of the word of God have been incorporated into our being. Our reborn self splits and multiplies but can not die. We have an eternal soul structure.
Churches multiply. Believers multiply. Life is reproduced but there is a duplication and division that still has connection and sameness.
Then there is division where there is separation. Parts are carved off by force or things that were one become separate. Reproduction can be painful because growth can cause strain but this separation is more like amputation.
Bringing the natural man into spiritual things causes this kind of division.
"A dishonest man spreads strife, and a whisperer separates close friends." - Proverbs 16:28 ESV
The whisper infects the emotions and connects with the wounded natural man and suddenly two people who were one have been separated. The air has made it's way into a space that had no air before. It is a tragic division.
" 'Be angry, and do not sin': do not let the sun go down on your wrath, nor give place to the devil." - Ephesians 4:26-27 NKJV
If the accuser has a place he will use it like a wedge to divide. A lie is like a thorn that causes pain and creates conditions where infection can occur.
"But to you who fear My name The Sun of Righteousness shall arise With healing in His wings; And you shall go out And grow fat like stall-fed calves." - Malachi 4:2 NKJV
"Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ, from whom the whole body, joined and held together by every joint with which it is equipped, when each part is working properly, makes the body grow so that it builds itself up in love." - Ephesians 4:15-16 ESV
Growth is beautiful isn't it!
Divisions that add to complexity in a structure that is unified is amazing. The same flowers grow on many shores separated by bodies of water but they are there.
"And he said to them, "Go into all the world and proclaim the gospel to the whole creation. Whoever believes and is baptized will be saved, but whoever does not believe will be condemned." - Mark 16:15-16 ESV
"Do not think that I have come to bring peace to the earth. I have not come to bring peace, but a sword. For I have come to set a man against his father, and a daughter against her mother, and a daughter-in-law against her mother-in-law. And a person's enemies will be those of his own household." - Matthew 10:34-36 ESV
Divine reproduction does bring a certain kind of separating division. A great gulf is fixed that only faith in God's gracious character can bridge.
"Come to me, all who labor and are heavy laden, and I will give you rest." - Matthew 11:28 ESV
God wants to divide us from our burdens. He wants to multiply grace so it surrounds us in our experience. He will at times prune off many things all at once so that in time we can grow and be focused on fruitful reproduction.
"For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart." - Hebrews 4:12 ESV
Oh God! Divide what must be divided and preserve that which never should be divided. Make us ministers of reconciliation and give us reproductive lives that spread your words like seed.
"Happy are you who sow beside all waters, who let the feet of the ox and the donkey range free." - Isaiah 32:20 ESV