1 Corinthians 16:13-14 (CJB), "Stay alert, stand firm in the faith, behave like a [man]1, grow strong. Let everything you do be done in love."2
Growing strong, being a man (of integrity, honor), being firm in your faith, staying alert -- these are all good things, but if you do not do it in love, it's all for naught.
1 Corinthians chapter 13 explains it well: