The last two lines in the second stanza of Hymns, #73, written by M. E. Barber, say, "Just to breathe the Name of Jesus, / Is to drink of Life indeed." M. E. Barber was a missionary sent to China from England who helped Watchman Nee very much to know the Lord in the way of life. In her hymn she said that to breathe the name of Jesus is to drink of life indeed. The way to breathe the name of Jesus is simply to call on His name, saying, "O Lord Jesus." This is the way to breathe the Lord, who is the Spirit, as life.
In Greek the verb translated "call on" is epikaleo. This verb is composed of on and call (by name); thus, it means to call out audibly. The way to call on the name of the Lord is to cry out, even to shout, "Lord Jesus! O Lord Jesus! Lord Jesus!" Some may think that the Lord Jesus is not deaf, and thus there is no need for us to shout in this way. However, we know from our experience that when we pray to the Lord silently, it is difficult for us to touch the Spirit. When we pray in this way, we may not sense any refreshing, watering, feeding, or satisfying within. But when we cry out, "Lord Jesus! Amen, Lord! Hallelujah! O Lord Jesus!" after only a short time we are inwardly refreshed. If we continue to call on the Lord in this way, we sense that we are being watered. After calling on the Lord for a longer time, we feel inwardly satisfied. This is the issue of our breathing the name of Jesus by calling on Him.