Please capitalize where necessary: 13:33 another parable spoke he unto them; the kingdom of heaven is like unto leaven, which a woman took, and hid in three measures of meal, till the whole was leavened.
A: 13:33 Another parable spoke he unto them; The kingdom of heaven is like unto leaven, which a woman took, and hid in three measures of meal, till the whole was leavened.

Please capitalize where necessary: i get this error when i try to activate the plugin.
A: I get this error when I try to activate the plugin.

Please capitalize where necessary: it was also problematic that we had selected as would-be students the best applicants.
A: It was also problematic that we had selected as would-be students the best applicants.

Please capitalize where necessary: the resulting bar is very fragile, and producers must then sinter the bar.
A:
The resulting bar is very fragile, and producers must then sinter the bar.