It is no doubt startling to discover that the Bible simply does not say such a thing. The phraseology is reminiscent of Revelation 3:20—the passage usually invoked to support the idea. But examine what Revelation 3:20 actually teaches. Revelation chapters 2 and 3 consist of seven specific messages directed to seven churches of Christ in Asia Minor in the first century. Thus, at the outset, we must recognize that Revelation 3:20 is addressed to Christians—not non-Christians seeking conversion to Christ.
Second, Revelation 3:20 is found among Christ’s remarks to the church in Laodicea. Jesus made clear that the church had moved into a lost condition. The members were unacceptable to God since they were “lukewarm” (3:16). They had become unsaved since their spiritual condition was “wretched and miserable and poor” (3:17). Thus, in a very real sense, Jesus had abandoned them by removing His presence from their midst. Now He was on the outside looking in. He still wanted to be among them, but the decision was up to them. They had to recognize His absence, hear Him knocking for admission, and open the door—all of which is figurative language indicating their need to repent (3:19). They needed to return to the obedient lifestyle essential to sustaining God’s favor (John 14:21,23).
Observe that Revelation 3:20 in no way supports the idea that non-Christians merely have to “open the door of their heart” and “invite Jesus in” with the assurance that the moment they mentally/verbally do so, Jesus comes into their heart and they are simultaneously saved from all past sin and have become Christians. The context of Revelation 3:20 shows that Jesus was seeking readmission into an apostate church.
Does the Bible teach that Christ comes into a person’s heart? Yes, but not in the way the religious world suggests. For instance, Ephesians 3:17 states that Christ dwells in the heart through faith. Faith can be acquired only by hearing biblical truth (Romans 10:17). When Bible truth is obeyed, the individual is “saved by faith” (Hebrews 5:9; James 2:22; 1 Peter 1:22). Thus Christ enters our lives when we “draw near with a sincere heart in full assurance of faith, having our hearts sprinkled from an evil conscience [i.e, repentance] and our bodies washed with pure water [i.e., baptism]” (Hebrews 10:22).
