1 Corinthians 2:1
“And I, brethren, when I came to you, did not come with excellence of speech or of wisdom declaring to you the testimony of God.”
High education, high IQs, elegant speakers do not make the cut before God; He likes to keep it simple.
Truth speaking - God should always get the glory, admonition, praise, etc because he deserves it.
Let your speech and your way reflect Christ. Do not display yourself but Christ. Jesus displayed His love for us on the cross the least we can do is give Him all the credit and praise.
God will put His words in your mouth with power.