21 Since the Greek phrase εἰσέρχομαι καὶ ἐξέρχομαι (eiserchomai kai exerchomai, “come in and go out”) is in some places an idiom for living or conducting oneself in relationship to some community (“to live with, to live among” [cf. Acts 1:21; see also Num 27:17; 2 Chr 1:10]), it may well be that Jesus’ words here look forward to the new covenant community of believers. Another significant NT text is Luke 9:4, where both these verbs occur in the context of the safety and security provided by a given household for the disciples. See also εἰσέρχομαι 1.b.β.
22 That is, pasture land in contrast to cultivated land.

In other versions

I am the door. If anyone enters by me, he will be saved and will go in and out and find pasture.

I am the gate; whoever enters through me will be saved. They will come in and go out, and find pasture.

I am the gate. If anyone enters by me, he will be saved and will come in and go out and find pasture.

Yes, I am the gate. Those who come in through me will be saved. They will come and go freely and will find good pastures.

I am the door. If anyone enters through me, he will be saved, and will come in and will go out and will find pasture.

I am the door: by me if any man enter in, he shall be saved, and shall go in and out, and find pasture.

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