Contradiction with Genesis 3:19
Philippians 3:21 speaks of transformation from lowly bodies to glorious ones, while Genesis 3:19 emphasizes human return to dust.
Genesis 3:19: In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou [art], and unto dust shalt thou return.
Contradiction with Ecclesiastes 9:5
Philippians 3:21 discusses life and transformation after death, whereas Ecclesiastes 9:5 suggests the dead know nothing.
Ecclesiastes 9:5: For the living know that they shall die: but the dead know not any thing, neither have they any more a reward; for the memory of them is forgotten.
Contradiction with Job 7:9-10
Philippians 3:21 suggests a change after death, but Job 7:9-10 implies a permanent absence after death.
Job 7:9-10: [As] the cloud is consumed and vanisheth away: so he that goeth down to the grave shall come up no [more].
Contradiction with Psalm 146:4
Philippians 3:21 describes hope in transformation, in contrast, Psalm 146:4 states thoughts perish at death.
Psalm 146:4: His breath goeth forth, he returneth to his earth; in that very day his thoughts perish.
Contradiction with Isaiah 26:14
Philippians 3:21 talks about bodies being transformed gloriously, but Isaiah 26:14 suggests the dead will not live.
Isaiah 26:14: [They are] dead, they shall not live; [they are] deceased, they shall not rise: therefore hast thou visited and destroyed them, and made all their memory to perish.
Contradiction with 1 Corinthians 15:50
Philippians 3:21 involves transformation for heavenly life, opposed by 1 Corinthians 15:50 stating flesh and blood cannot inherit the kingdom.
1 Corinthians 15:50: Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption.
Contradiction with Ecclesiastes 3:19-20
Philippians 3:21 promises a future transformation, whereas Ecclesiastes 3:19-20 equates human fate with animals, returning to dust.
Ecclesiastes 3:19-20: For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; so that a man hath no preeminence above a beast: for all [is] vanity.
Contradiction with Isaiah 38:18-19
Philippians 3:21 speaks of future glorification, while Isaiah 38:18-19 notes the dead cannot praise God or hope for truth.
Isaiah 38:18-19: For the grave cannot praise thee, death can [not] celebrate thee: they that go down into the pit cannot hope for thy truth.
Paradox #1
The verse talks about transforming our bodies to be like a glorious body. Scientifically, this idea of transforming bodies instantly into a different, perfect form conflicts with our understanding of biology and physics, where such transformations are not possible.