Contradiction with James 1:3
This verse states that the testing of faith develops patience, which can be seen as consistent with Romans 5:4, so it is not directly contradicting.
James 1:3: Knowing [this], that the trying of your faith worketh patience.
Contradiction with Genesis 18:14
This verse suggests that nothing is too hard for the Lord; it does not directly contradict the process through which character develops in Romans 5:4.
Genesis 18:14: Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.
Contradiction with 2 Corinthians 1:8-9
These verses describe reliance on God rather than developing character through suffering, which isn't a contradiction but a different focus of suffering.
2 Corinthians 1:8-9: For we would not, brethren, have you ignorant of our trouble which came to us in Asia, that we were pressed out of measure, above strength, insomuch that we despaired even of life:
Contradiction with Job 3:11
Job questions why he didn't die at birth, expressing despair rather than the perseverance or character mentioned in Romans 5:4.
Job 3:11: Why died I not from the womb? [why] did I [not] give up the ghost when I came out of the belly?
Contradiction with Ecclesiastes 2:17-18
The speaker expresses hatred for life and labor, showing a perspective of despair not aligned with the character-building theme in Romans 5:4.
Ecclesiastes 2:17-18: Therefore I hated life; because the work that is wrought under the sun [is] grievous unto me: for all [is] vanity and vexation of spirit.