John, you've talked about the Christian's walk. What does it mean to walk worthy?
Yes, the Bible uses the phrase "walk worthy" in Eph. 4:1 and Col. 1:10 in the KJV. The important thing to understand about this wording is that "walk" means "live a life worthy." The ESV reads "walk in a manner worthy."
In the book of Ephesians, Paul encourages Christians with a practical application of the theology, exhorting them to walk worthy of their calling in Christ: "I, therefore, the prisoner of the Lord, beseech you to walk worthy of the calling with which you were called, with all lowliness and gentleness, with longsuffering, bearing with one another in love, endeavoring to keep the unity of the Spirit in the bond of peace." (Eph. 4:1-3)
To walk worthy means to live for God daily in the conduct of one's life. To walk worthy is the idea of matching up: our actions should match our words, and our outward presentation should match our inward convictions. To walk worthy of our calling means to live up to that calling, to live in such a way as to honor God as we complete His course of action for us. Please understand that the command to walk worthy of our calling does not mean that we are to somehow merit or earn our position. Instead, Paul is exhorting believers to live their lives so as to prove they belong to Christ.
The book of James reiterates the idea that we should walk according to that call, our lives reflecting good works: "What good is it, my brothers and sisters, if someone claims to have faith but has no deeds? Can such faith save them?" (Jms. 2:14) James is warning those who do not walk worthy of their calling that their faith is a dead faith, which is no faith at all. How we live should match up with what we say we believe. The reality of that calling is reflected in our daily lives as we rely on His divine power to help us walk worthy.