 Romans 12, 11 in the New Testament picks up on this theme. Do not be slothful in zeal. This is talking about serving Christ. Don't be slothful in zeal. Be fervent in spirit. Serve the Lord. You know one of my favorites, of course, 1 Corinthians 15, 58. Out of the high theology of the resurrection, it ends in verse 58, the resurrection chapter. Be steadfast, unmovable, always abounding in the work of the Lord. You know your labor is not in vain in the Lord.