THE TWO GATES
Both the wide gate and the narrow gate represent Jesus and salvation.
Salvation is comprised of two parts: justification and sanctification. Jesus described this spiritual reality in His analogy by using two gates. The wide gate signifies justification. The narrow gate signifies sanctification.
Justification is forgiveness of one’s sins via the death and resurrection of Jesus.
Sanctification is separation from slavery to sin via the Holy Spirit (cf. Rom. 8:13) plus faith alone in the dwelling of Jesus in one’s mortal flesh (cf. Acts 26:18; 2 Cor. 4:11, 13:5 using the author’s translation: “Test yourselves if you are in the faith; examine yourselves! Or do you not recognize this about yourselves that Jesus Christ is in you—unless indeed you fail the test?”).
The Present and The Future
Not all those who are justified are sanctified.
The wide gate is Jesus and leads to justification. Many, but not all, enter by this gate. Those not entering are unbelievers who are doomed to the lake of fire, aka hell (cf. Rev. 20:15).
The narrow gate is also Jesus and leads to sanctification by faith. Few believers enter this gate (cf. Matt. 22:14). Those who do enter will receive rewards in heaven (cf. 2 Cor. 5:10; Rev. 11:18).