To inspire and encourage the congregation to stand boldly in their faith, knowing that victory is assured in Christ.
Scripture verses that support the idea of standing in boldness and achieving victory, in addition to Ephesians 3:12, are: Joshua 1:9, 1 Corinthians 15:57, and Romans 8:37.
To reinforce your current ideas and add depth to your sermon, you can explore the concept of boldness in the Bible by examining the lives of biblical characters who displayed boldness and achieved victory. Discuss the importance of faith in achieving victory and standing in boldness. Highlight the power of prayer and seeking God's guidance in our pursuit of victory.
Regarding language suggestions from the original languages, you can consider the Greek word for 'boldness' in Ephesians 3:12, παρρησία (parrhesia), which conveys the idea of confidence and freedom of speech. Look for other instances where the word παρρησία is used in the New Testament to further illustrate the concept of boldness and its application in different contexts.
Remember to weave these additional ideas and Scripture passages seamlessly into your sermon, providing relevant examples and practical applications for your listeners.