Testimonies are great things about what the Lord has done for us, but no-one will be offended when you talk about what God has done for you. You need to be specific about sin, about Christ's death on the cross, about others' need for a saviour, and about their need to repent and trust in Christ.
Mark DeverThere are times when the gospel just seems to be powerfully at work in a nation, and thousands upon thousands are converted. If you think about what has happened in Latin America, Africa and East Asia all in the last hundred years, it is breathtaking. We have seen an expansion of the gospel as we have never seen before in the history of the church.
Mark DeverI heard about a pastor in a church of 5,000 people who employed two seminary students whose main responsibility was to get four new people baptized each week. When asked, "What happens if they can't meet the quota?", his response was, "Then I'll find two students who can". This man wasn't even remotely interested in true gospel preaching. He was results-driven.
Mark Dever