2 Corinthians 10:18 WBT

¹⁶  To preach the gospel in the [regions] beyond you, [and] not to boast in another man's line of things made ready to our hand.

¹⁷  But he that glorieth, let him glory in the Lord.

¹⁸  For not he that commendeth himself is approved, but whom the Lord commendeth.