The core message is the necessity of being selective with friendships and company, as these relationships can have significant spiritual consequences, potentially affecting one's divine destiny or even leading to negative outcomes. 

Key insights from the day's teaching likely include:
Impact of Association: The people one keeps company with can influence their path, either for good or ill.
Biblical Examples: The message likely uses biblical narratives to illustrate this principle. One mentioned example is that of Jonathan, who, despite being close to David, ultimately died the "death of the wicked" due to his associations and family lineage (Saul's house).
The Case of Lot: Another potential reference is Lot, who nearly perished in Sodom and Gomorrah and would have if not for God's direct intervention, highlighting the danger of dwelling in wicked environments and company.

Spiritual Vigilance: Believers are urged to take heed and exercise caution regarding who they allow into their inner circle, as ungodly associations can compromise their walk with God.

Wisdom in Relationships: The lesson emphasizes the need for spiritual discernment when forming friendships and maintaining close relationships to ensure they align with one's faith and purpose