First, true apostles of Christ do not use flattery words;
Paul said, "For our exhortation was not of deceit, nor of uncleanness, nor in guile: But as we were allowed of God to be put in trust with the gospel, even so we speak; not as pleasing men, but God, which trieth our hearts" 1 Thessalonians 2:3-4.
Preach the gospel of God whichever way you like; only don’t use flattering words which is kind like common practice these days. Flattery is excessive informalsweet talk given especially to further one's own interests. Know it’s flattery at this day and age hearing a million times someone say "God told me" and all he’s ever said are porkies.
Second, true apostles of Christ aren’t burdensome, but are gentle among believers, "even as a nurse cherisheth her children" 1 Thessalonians 2:7. Paul says, "our expenses would not be a burden to anyone, as we preached the gospel among you." He went on to say, "Ye are witnesses, and God also, how holily and justly and unblameably we behaved ourselves among you that believe" 1 Thessalonians 2:10.
I have this to say also to our apostles our day, behave yourselves among those who believe - walk worthy of God, perfectly straightforward and sincere, or rather please God at all times! Preach the gospel, as you were allowed of God, not with false motives or evil purpose in mind though. I don’t know how many of our apostles would be able to say "Ye are witnesses, and God also"?
If you holily and justly and unblameably behave yourselves, the word of God, will become effectual in the lives of those who believe, and that’s our hope, or joy, or crown of rejoicing. We don’t want those who believe to say because of you it’s vain to serve the Lord. As the apostles of Christ were not burdensome so should you.
Simple Gospel Summation