Daniel 1:4
Children in whom was no blemish, but well favoured, and skilful in all wisdom, and cunning in knowledge, and understanding science, and such as had ability in them to stand in the king’s palace, and whom they might teach the learning and the tongue of the Chaldeans.
Cross-reference
In Daniel 1:17-20, God rewards the youths with superior wisdom, fulfilling the potential implied by their qualifications here.
Daniel 2:21 says God gives wisdom and knowledge — the very qualities the youths possessed in Daniel 1:4.
Daniel 5:11 recalls Daniel's wisdom and position — the same wisdom for which he was chosen in Daniel 1:4.
Daniel 2:20 praises God as source of wisdom — the wisdom the youths were endowed with in Daniel 1:4 comes from God.
Leviticus 21:18-20 lists physical blemishes disqualifying priests—the same 'without blemish' standard applies to court youths.
In Acts 7:22, Moses' Egyptian education parallels the foreign court training described here — both prepare God's chosen leaders through immersion in pagan wisdom.
In Proverbs 22:29, the promise that skilled men serve kings is exemplified by these youths chosen for palace service.