Gentle

 II Timothy 2:24
“And the servant of the Lord must not strive; but be gentle unto all men, apt to teach, patient.”

Good

 Romans 12:9
“Let love be without dissimulation.  Abhor that which is evil; cleave to that which is good.”

Gospel

Romans 1:16-17
“For I am not ashamed of the gospel of Christ:  for it is the power of God unto salvation to everyone that believeth; to the Jew first, and also to the Greek.  For therein is the righteousness of God revealed from faith to faith:  as it is written, The just shall live by faith.”

Galatians 1:6-7
“I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel:  Which is not another; but there be some that trouble you, and would pervert the gospel of Christ”