I think it was Martin Luther who popularized the phrase, God uses crooked sticks to draw straight lines. It’s a cleaver phrase that communicates the notion that God works through imperfect people to accomplish His perfect will. Though I believe God calls us to be transformed in our thoughts, words, and actions (Rom 12:1-2), and to strive for spiritual and moral purity (1 Pet 1:15-16), the reality is that He does not wait for us to be perfect before He uses us. In fact, if God were to say to His children, “Let those who are without sin serve me”, there would be none. Though Christians are not perfect, we can be humble and obedient, and when willing to do God’s will, He can and will work through us as conduits of truth, grace, and love.