"But everyone who hears these words of mine and does not put
them into practice is like a foolish man who built his house on
sand" (Matthew 7:26). "Therefore, my beloved brethren, be
steadfast, immovable, always abounding in the work of the Lord,
knowing that your toil is not in vain in the Lord" (1 Corinthians
15:58). "For Demas, having loved this present world, has deserted
me" (2 Timothy 4:10).