賢明で

wise and

→ 賢明だ
phrase Rare #31,895
wise and The て-form of 賢明だ, meaning “wise” or “sensible.” It connects this description to another adjective or verb phrase. In 賢明でいらっしゃいます, it is part of a respectful expression meaning “is wise.”
JA: 彼女は賢明で思いやりのあるリーダーです。
EN: She is a wise and compassionate leader.

陛下は賢明でいらっしゃいます

Your Majesty is wise.

— HERO (2002)

彼の信奉者たちは彼を賢明で勇敢な人だ尊敬していた

His followers revered him as a wise and courageous man.

彼はボブより賢明で慎重

He is wiser and more cautious than Bob.

彼は勇気があるばかりでなく賢明でもある

He is not only courageous but also wise.

何人も運命より賢明であり得ない

No one can be wiser than fate.