God demands righteousness, and when man fails to meet His standards, He calls for the shedding of blood for the remission of sins (Hebrews 9:22). Throughout the Old Testament, sacrifices majored on the blood of animals, but these animal sacrifices could never take away sins (Hebrews 10:4). God, in mercy, sent His Son to give “himself for us an offering and a sacrifice to God for a sweetsmelling savour” (Ephesians 5:2). Unlike the Old Testament sacrifices, the Lord Jesus was a single onetime sacrifice that offered forgiveness of sin for all and to all. In shedding His blood, the Lord Jesus Christ became man’s sacrifice, and man need look no further than the shed blood of Christ for the means by which God is satisfied.
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).
