THE PURPOSE OF GOD CONCERNING MAN

Psalm 119:99.
Psalm 23:1-3

What is it that the Lord has done for you this year that you ought to testify, but you didn't?. Always testify whenever God might have done something for you.

Testimony is all about showing for the the glory of God in your life to the congregation.

There are some testimony that you can choose not to share to anyone but there are some that you cannot hide because, it carrys the covenant of God in it.
Mark 5:25-34
Whenever you want to give thanks to God for he has done for you, always back it up with a tangible offering that will please God.
The reason why some people fail to give testimony is because of fear. Why don't you ask Jesus to teach you in your heart, how to testify.