I am the Door: by me—by living relation to me—if any man; i.e. either shepherd or sheep, for in this part of the interpretation they are not distinguished, and they alike need "salvation" and "pasture."
By me if any man enter, he shall be saved, and shall go in and out, and find pasture. "Salvation" here spoken of refers primarily to deliverance from dangers, protection from the ravenous wolves without the fold, and from false shepherds within.
"Go in and out" is a phrase frequently used "to denote the free use of an abode by one who is at home in the honey" (Deuteronomy 28:6; Deuteronomy 31:2; Acts 1:21). The believer who enters into fellowship with God, and is "saved," does not "go in and out" of that state, but can as a child share by turns the Divine repose of the home, and the high privilege of his sonship in the world.
"He claims his share in the inheritance of the world, secure of his home" (Westcott).