There are teachings in the Bible that are one-sided coins. “Those whom he predestined he also called, and those whom he called he also justified, and those whom he justified he also glorified” (Romans 8:30 ESV). You have faith in Jesus because God wanted you to have faith, he called you to faith, and he will raise you in glory. God flipped a one-sided coin, and you came up heads. Grace is a one-sided coin.
We’re more familiar with two-sided coins and how to flip them. “Heads I win. Tails you lose.” We think that’s how God flips coins too. We assume he picks winners and losers. So we make judgments about people based on the faith we recognize in ourselves but can’t discern in others. We’re quick to flip a coin with a label on each side. We have the habit of sorting people into “believers and unbelievers.” Those categories exist, but only God knows who is in them at any moment in time. We have to be very cautious when we try to referee on God’s behalf.
But we can always tell the good news of a one-sided coin. The Word became flesh. He dwelt among us. We have seen his glory. “For from his fullness we have all received, grace upon grace” (John 1:16 ESV). Grace upon grace is the coin God flips for all mankind. That’s how we’re called. That’s how we’re justified. And that’s why we will be glorified.