Tim Conway examines James 4:13–15, calling out practical atheism—the everyday habit of planning without acknowledging God. He offers six insights showing why saying “today or tomorrow we will…” without “if the Lord wills” is both arrogant and sinful. Discover how viewing your life as a vapor, renewing your mind in Christ, and rejecting practical atheism can reshape your words, your work, and every tomorrow under God’s sovereign will.