Every unsaved person will have windows of opportunities when he becomes most receptive to the gospel of Christ. The Devil works hard to keep people in darkness and will distract them by every means necessary (i.e., the death of a loved one, a crying child, a ringing phone, busyness, etc.). The salvation of a soul involves a spiritual battle that can only be won by the Lord’s intervention. There is a window of time when the lost are most receptive to the gospel, likewise suggesting only a window of opportunity for the saved to speak for Christ. This is the very reason the apostle Paul stressed the importance of the saints of God beseeching the Lord to open to them a door of utterance (Ephesians 6:19).
The Bible clearly points out that by God’s grace the apostle Paul laid the foundation which is Jesus Christ and Him crucified. All those who have come after the apostle Paul have built upon that foundation. It is with this in mind that Paul warned believers to take heed how they built upon the foundation. The foundation has been laid, and no other foundation can be laid, but each believer must carefully examine the means by which he builds upon Christ. Not only should believers take heed to their daily walk, but self-examination is also necessary in their manner of service for the Lord Jesus Christ. Each believer should search the scriptures to ensure that his efforts glorify the Lord. Far too much effort is self-serving and selfish and not God-centric. Self-examination helps define one’s motives.
Self-examination serves as a tool for man to use to find out who and what he is. Though some preachers suggest that believers should never question their own salvation experience, the scripture encourages self-examination. If there are doubts, believers should certainly ask questions concerning the basis for their salvation. Was it based upon one’s feelings or solely upon the scriptures? They should ask what they did in order to be saved. Did they join a church, do some penitent work, or did they call upon the name of the Lord Jesus Christ by faith as dictated by the scriptures? They should ask about the effects of their salvation. Have they seen a change of heart, or are they the same that they were before trusting Christ as Saviour?