The prefix, or root word, ortho means: straight; right; correct. We see ortho in front of a lot of important words such as orthodontics, orthopedics, orthotics, and orthoscopic. A couple theological terms should also be included in the mix: Orthodoxy and Orthopraxy. Orthodoxy refers to right doctrine. Orthopraxy refers to right practice. Jesus, the Word made flesh, most certainly exemplified everything He taught. Ideally as believers we want our orthodoxy and orthopraxy to be in alignment and working hand to hand. 1 John 2:3-6 helps clarify the distinct terms and how they work together: "We know that we have come to know Him if we keep His commands." [orthodoxy.] Whoever says, 'I know Him,' but does not do what He commands [orthopraxy] is a liar, and the truth is not in that person. But if anyone obeys His word, love for God is truly made complete in them. This is how we know we are in Him: Whoever claims to live in Him must live as Jesus did." (ESV) Paul had to especially encourage his young protege, Timothy, just how vital both of these were. Sound or right teaching must be carefully and faithfully preached. And likewise, whatever is taught, must be put into practice. This also means of course that Paul's exhortations to Timothy, were also very much meant for us...