"Beloved, we are God's children now, and what we will be has not yet appeared;
we know that when he appears we shall be like Him." (1 John 3:2)
No matter how grown up you may think yourself to be, you do not even remotely resemble how you will appear in the resurrection. Therefore, it should be no surprise that embryonic human beings look radically different than adults.
But these appearances are indifferent to Jesus, He knows that your identity does not come from your stature, but from your begetting. "That which is begotten of the flesh is flesh, that which is begotten of the Spirit is Spirit" (John 3:6). One day, you will "mature to manhood...the stature of the fullness of Christ" (Eph. 4:13). But already now, you are who you will be eternally.
On Good Friday, our Elder Brother showed us this full stature: The most mature willingly die for the least.
The kingdom of Satan is otherwise. There, the least are unwillingly sacrificed for the greater. This is the world of fetal tissue harvesting and fetal stem cell research. These businesses are not the same thing. Fetal organs are harvested in abortion clinics from children aged 10 to 39 weeks. Fetal stem cells are harvested at fertility clinics from 1 week old children, begotten in vitro. In both cases, the young are sacrificed to rejuvinate the old.