So, who is the Christian, but, ‘the Church of God at Corinth . . sanctified in Christ Jesus, called to be saints,’ that they are in real, living union with the whole body of believers , , so that little community of Christians had its living bond of union with all the brethren in every place that called upon the name of Jesus Christ.
But what is it to call on the name of Jesus? , , To call on the name of Christ is to embrace in our faith and to beseech the exercise on our behalf of all which Jesus is as the Messiah, anointed by God with the fulness of the Spirit. As such He is the climax, and therefore the close of all revelation
In and on the name of the Lord we must call , , If ‘in every place’ we have Him as the object of our faith and desire, and as the Hearer of our petition, in ‘every place’ we shall have Him for our help, and all will be full of His bright presence; and though we have to journey through the wilderness we shall ever drink of that spiritual rock that will follow us, and that Rock is Christ. In every place call upon His name, and every place will be a house of God, and a gate of heaven to our waiting souls.’ - MacLaren