Hello rose. Here is a passage out of 1 Corinthians 2 where Paul reminds them about how he originaly witnessed to them when he was first amoung them. In the light of Chad's verse above, I think it is interesting and I hope helpful.
1 And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God.
2 For I determined not to know any thing among you, save Jesus Christ, and him crucified.
3 And I was with you in weakness, and in fear, and in much trembling.
4 And my speech and my preaching was not with enticing words of man's wisdom, but in demonstration of the Spirit and of power:
5 That your faith should not stand in the wisdom of men, but in the power of God.
Remembering what Paul had said to the Romans about the gospel he preached, we can take comfort and rest in the fact that it is not us but God who does the convicting: v1:14-16 "I am debtor both to the Greeks, and to the Barbarians; both to the wise, and to the unwise. So, as much as in me is, I am ready to preach the gospel to you that are at Rome also. For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek."
This is the promice concirning the Holy Spirit's work in gospel witnessing: John 16:7-11:
"7 Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you. 8 And when he is come, he will reprove the world of sin, and of righteousness, and of judgment: 9 Of sin, because they believe not on me; 10 Of righteousness, because I go to my Father, and ye see me no more; 11 Of judgment, because the prince of this world is judged."
Good to see you again...hope this helps some. ...DGB