How should Christians deal with deception in their lives?

In 2 Samuel 3, Joab warns David about Abner, reminding him that Abner is a deceiver. This serves as a lesson for Christians to be vigilant against deception, particularly that arising from the flesh. Utilizing Scripture as a foundation and prayer as a means of communication with God, believers are equipped to discern truth from lies. Just as Joab acted as a counselor to David, Christians should lean on fellow believers to hold them accountable and keep them grounded in God’s truth, continually searching their hearts for any deceit.