Teach Yourself Apologetics.

'But sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear.' KJV. 1Peter 3:15

Blogger: 'reason'. This can be as strong a tool in reaching others as giving your testimony.

'Testimony' is often feelings. 'Reason' should be compelling argument.

Guess what? - You can do BOTH!