I ... strengthen them in ... Lord - (Hos 1:7). I, the Father, will strengthen them in the name, that is, the manifested power, of the Lord, Messiah, the Son of God.
walk ... in his name - that is, live everywhere and continually under His protection, and according to His will (Gen 5:22; Psa 20:1, Psa 20:7; Mic 4:5).