1 Corinthians 1

17 For Christ did not send me to baptise, but to preach the gospel—not with wisdom and eloquence, lest the cross of Christ be emptied of its power.
For us who know God, we are called to preach the gospel to every living creature, and of course knowing this there'll be constant rejection. However, this doesn't make me tremble anymore as I know that spreading the truth makes me a successful evangelist. Paul always made sure to emphasise that is through God's grace that people are saved, not powerful speeches or persuasiveness.

27 But God chose the foolish things of the world to shame the wise; God chose the weak things of the world to shame the strong.
One of the reasons why we should be so grateful for Grace is because it is accessible to everyone, not just the intellectual. This further shows the sovereignty of God that he is far greater than philosophy and logic. It is by Faith, not wisdom or works that makes us right before God even though we don't deserve it.