Please capitalize where necessary: general revelation is also taught in romans 1:20, “for since the creation of the world god's invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse.”
A: General revelation is also taught in Romans 1:20, “For since the creation of the world God's invisible qualities—His eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse.”

Please capitalize where necessary: enjoy our barcelona travel deals!
A: Enjoy our Barcelona travel deals!

Please capitalize where necessary: libri's early work was on mathematical physics, particularly the theory of heat. however he made many contributions to number theory and to the theory of equations.
A: Libri's early work was on mathematical physics, particularly the theory of heat. However he made many contributions to number theory and to the theory of equations.

Please capitalize where necessary: hand baggage (including personal items)
A:
Hand baggage (including personal items)