What does Colossians 2:6 mean?

In this brief verse, Paul makes a grand statement about the believer's walk with Christ. The Colossians, like all other saved believers, received Christ by faith (Acts 4:12; Romans 10:9; Ephesians 2:8–9). Paul's implication is that those who accepted Christ in faith ought to "walk"—to live and think—by faith, as well (Colossians 2:7). The false teachings confronting Colossae emphasized works and personal sacrifice as the means to pleasing God. It is true that works are a vital aspect of the Christian's life (1 John 3:17–18), but these are the results of saving faith, not the source of it. Our walk with God must be rooted in faith—and therefore rooted in Him, not us—just as salvation is. Otherwise, our spirituality is based on human performance and is destined to fail.

Though Paul lived a highly motivated Christian life, he knew faith was the only way to please God. A certain type of works without faith can be accomplished by non-believers. However, a person who has received Christ as Lord will live by faith, not by sight (2 Corinthians 5:7). This kind of faith will lead to many good works, but our salvation remains constant despite our actions because it is based on Christ and what He has done.