Add spaces: maintainingfaithandagoodconscience;which[last]some,havingputaway,havemadeshipwreckastofaith;

Answer: maintaining faith and a good conscience; which [last] some, having put away, have made shipwreck as to faith;

Add spaces: Theafternoonwillbringvariablecloudswithrainshowers.Duringthenightvariablecloudyandclearweatherwillprevail.

Answer: The afternoon will bring variable clouds with rain showers. During the night variable cloudy and clear weather will prevail.

Add spaces: Earringsmadeofturquoiseon925sterlingsilverhooks.

Answer:
Earrings made of turquoise on 925 sterling silver hooks.