Please capitalize where necessary: and king hezekiah and the princes commanded the levites to sing praise to jehovah with the words of david, and of asaph the seer. and they sang praises with gladness, and bowed their heads and worshipped.
A: And king Hezekiah and the princes commanded the Levites to sing praise to Jehovah with the words of David, and of Asaph the seer. And they sang praises with gladness, and bowed their heads and worshipped.

Please capitalize where necessary: facebook, google fight back: 'draft hate speech law will gag free expression'
A: Facebook, Google fight back: 'Draft hate speech law will gag free expression'

Please capitalize where necessary: thread tolerance after coating 6h
A: Thread tolerance after coating 6H

Please capitalize where necessary: i offer you a shortcut to network, knowledge and growth by being your partner in export-related tasks and include you in my network of good references on the local as well as distant markets.
A:
I offer you a shortcut to network, knowledge and growth by being your partner in export-related tasks and include you in my network of good references on the local as well as distant markets.