The answers to all questions are in His word, if you only seek them.
(1) Why should we value life?
In the beginning God created the heaven and the earth. Genesis 1:1
So God created man in His own image, in the image of God he created him; male and female He created them. Genesis 1:27
And hath made of one blood all nations of men for to dwell on all the face of the earth, and hath determined the times before appointed, and the bounds of their habitation; Acts 17:26
Know ye that the LORD he is God: it is he that hath made us, and not we ourselves; we are his people, and the sheep of his pasture. Psalm 100:3
Thus saith the LORD, thy redeemer, and he that formed thee from the womb, I am the LORD that maketh all things; that stretcheth forth the heavens alone; that spreadeth abroad the earth by myself; Isaiah 44:24
Col:1:16: For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: Colossians 1:16
But now, O LORD, thou art our father; we are the clay, and thou our potter; and we all are the work of thy hand. Isaiah 64:8
(2) Who Is the Creator Of The Unborn?
Did not he that made me in the womb make him? and did not one fashion us in the womb? Job 31:15
Thine hands have made me and fashioned me together round about; yet thou dost destroy me. Remember, I beseech thee, that thou hast made me as the clay; and wilt thou bring me into dust again? Hast thou not poured me out as milk, and curdled me like cheese? Thou hast clothed me with skin and flesh, and hast fenced me with bones and sinews. Thou hast granted me life and favour, and thy visitation hath preserved my spirit. Job 10:8-12
For thou hast possessed my reins: thou hast covered me in my mother’s womb. I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well. My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth. Thine eyes did see my substance, yet being unperfect; and in thy book all my members were written, which in continuance were fashioned, when as yet there was none of them. Psalm 139:13-16
(3) How IS God Concerned With The Unborn?
Listen, O isles, unto me; and hearken, ye people, from far; The LORD hath called me from the womb; from the bowels of my mother hath he made mention of my name. Isaiah 49:1
Before I formed thee in the belly I knew thee; and before thou camest forth out of the womb I sanctified thee, and I ordained thee a prophet unto the nations. Jeremiah 1:5
But when it pleased God, who separated me from my mother’s womb, and called me by his grace, Galatians 1:15
Behold, I have graven thee upon the palms of my hands; thy walls are continually before me. Isaiah 49:16
As free, and not using your liberty for a cloke of maliciousness, but as the servants of God. Honour all men. Love the brotherhood. Fear God. Honour the king. 1 Peter 2:16-17