2 Timothy 2:21

“If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified, and meet for the master’s use...”

2 Timothy 4:11

“Only Luke is with me. Take Mark, and bring him with thee: for he is profitable to me for the ministry.”

Philemon 1:11

“Which in time past was to thee unprofitable, but now profitable to thee and to me:”