Agur treasured the revelation that God had given. "Tested" means "smelted," purified (cf. Psalm 12:6). It was trustworthy. Agur correctly regarded the aim of revelation to be the promotion of trust in God, not just knowledge ( Proverbs 30:5 b). Agur warned against adding to God"s revelation because that is a serious offense ( Proverbs 30:6; cf. Deuteronomy 4:2; Revelation 22:18). [source][source][source]