The New Life in Christ: A workman Approved by God:

Do your best to present yourself to God as one approved, a workman who does not need to be shamed and who correctly handles the word of truth. 2Timothy 2:15.

Preach the Word’ be prepared in season and out of season; correct, rebuke and encourage-with great patience and careful instruction. 2Timothy 4:2.

You must teach what is in accord with sound doctrine. Titus 2:1.

In everything set them an example by doing what is good. In your teaching show integrity, seriousness, and soundness of speech that can not be condemned, so that those who oppose you may be ashamed because they have nothing bad to say about us. Titus 2:7-8. Amen.