Wisdom comes from God. He made King Solomon the wisest man that lived in the world in his time. The bible says righteousness and riches dwell with wisdom, Proverbs 8:18, thus since God gave Solomon wisdom, he automatically became the richest man on the face of the earth in his days.
Interestingly, when God made Solomon the wisest man in the world, he didn’t give him any physical evidence like a crown, cap, staff of wisdom to further affirm that he hade made him the wisest man in the world, all he did was to SAY it and it was so. As a Christian, God has said that Christ has been made unto you wisdom from God, wow… just the way he told King Solomon, he has told the Christian, it would be wrong for the Christian to look for physical evidences to affirm the sincerity of God. All you have to do as a Christian is to believe his word and the SAY the same thing God has said about you.
The bible says God has blessed us with all spiritual blessings in heavenly places, Ephesians 1:3 and we know that the spiritual gives birth to the physical. Believe this word and speak consistently along side with the father and the result would be evident to you.
But of him are ye in Christ Jesus, who of God is made unto us wisdom, and righteousness, and sanctification, and redemption: