Should you try every possible approach to get the word across to someone?
Yes, you should test all possibilities and try whatever you can to get the word across to someone. Yet human wisdom and eloquence alone cannot convert anyone; the Holy Spirit must open the heart so a person attends to the message, as with Lydia in Philippi.
Les teaches that you should never deviate from testing all the possibilities and should try whatever you think you might be able to do to get the word across. But he also explains that talking yourself blue in the face won't get anybody; human wisdom and intellectual degrees cannot produce conversion. The central theme is the gospel, not baptism, and Christ sent Paul to preach the gospel, not with wisdom of words. The Holy Spirit must open the heart, as He opened Lydia's heart in Philippi so she attended to Paul's message.