'Walking' in the Bible

But when I saw that they are not walking uprightly to the truth of the good news, I said to Peter before all, 'If thou, being a Jew, in the manner of the nations dost live, and not in the manner of the Jews, how the nations dost thou compel to Judaize?

If we [claim to] live by the [Holy] Spirit, we must also walk by the Spirit [with personal integrity, godly character, and moral courage—our conduct empowered by the Holy Spirit].