The objective sentence is a statement of purpose added to the proposition. Sometimes it may be similar. The example of an objective sentence below is similar to the proposition.
Example
Passage: Romans 5:1-14
Subject: Suffering
Theme: Joy in suffering
Proposition: Every believer should rejoice in suffering.
Objective Sentence: Therefore every believer should rejoice in suffering.
Objective Sentence
Preaching Tips
Statement of Purpose