CONTEXT: Part of the message to the Seven (7) churches in Asia Minor, here in this chapter we have the final three churches Sardis (v.1-6), Philadelphia (v.7-13), and Laodicea (v.14-22). Of the seven churches, both Smyrna and Philadelphia receive no rebuke from Jesus. Laodicea however is the only church to receive no positive comment at all. They are spiritually useless (lukewarm) and Jesus says they need to stop walking the fence.
Our text often used as an alter call or another offer of salvation to individuals is in actuality Jesus’s invitation to the church. Think about that for a minute, the Bridegroom, the Head of the Church having to stand outside and ask for admittance. That should cause every Elder, Pastor, Preacher, whatever y’all may be called, and everyone in the pews to shudder and ask, “is Christ here in our church?” Is Christ the Bridegroom, the high and mighty ruler of this church? Or is He standing outside and asking and waiting for entry?
So in context, we understand that Jesus is explicitly speaking to the church, but that is not to say we can not make a practical application of this to man in general. Man apart from God, has a closed heart, that is because of the fall of man it is deceitful and evil, inclined toward sin. We also know from scripture that the Holy Spirit convicts people of sin. So metaphorically speaking Jesus is knocking on the hearts of man through the Spirit’s convictions. The question is will you answer the knock?